VICP Registry Case Source Bundle
Canonical URL: https://vicp-registry.org/case/USCOURTS-cofc-1_19-vv-00238
Package ID: USCOURTS-cofc-1_19-vv-00238
Petitioner: WCF
Filed: 2019-02-12
Decided: 2025-05-14
Vaccine: hepatitis A
Vaccination date: 2016-02-17
Condition: anti-NMDAR encephalitis
Outcome: denied
Award amount USD: 

AI-assisted case summary:
On February 12, 2019, Amy Faulkenberry, on behalf of her minor son WCF, filed a petition for compensation under the National Childhood Vaccine Injury Act of 1986. WCF, born in July 2014, received a hepatitis A vaccine and an influenza (flu) vaccine on February 17, 2016. Four days later, WCF began experiencing vomiting, and on March 6, 2016, he had convulsions. Ms. Faulkenberry alleged that these vaccines caused WCF's diagnosed condition of anti-NMDAR encephalitis, which is a rare neurologic condition associated with antibodies against N-methyl-D-aspartate receptors. The respondent, the Secretary of Health and Human Services, disputed the claim. Both parties retained experts: Ms. Faulkenberry presented Dr. Lydia Marcus, a pediatric neurologist, and the Secretary presented Dr. Eric Lancaster, a neurologist specializing in antibody-mediated neurologic disorders. Both experts agreed on WCF's diagnosis of anti-NMDAR encephalitis but disagreed on vaccine causation. Dr. Marcus proposed molecular mimicry as a plausible mechanism by which vaccines could induce autoimmune encephalitis, citing studies suggesting molecular homology between influenza antigens and the NMDA receptor. Dr. Lancaster disputed this theory, stating it was highly unlikely that a denatured vaccine protein would resemble the specific 3-dimensional epitope on the GluN1 receptor subunit required for the disease. He also noted deficiencies in Dr. Marcus's theory, such as the lack of specificity regarding the vaccine components and mechanism, and highlighted the possibility of infection as an alternative cause, citing WCF's history of respiratory infections and a diagnosis of maxillary sinusitis preceding the encephalitis symptoms. Dr. Marcus countered that even if an infection was present, the vaccinations could still be considered a necessary and substantial cause, and that the relationship between environmental triggers and autoimmune encephalitis is generally accepted without requiring an exact mechanistic explanation. The Special Master, Christian J. Moran, denied compensation on November 1, 2024. The Special Master found that Ms. Faulkenberry failed to establish by a preponderance of the evidence a medical theory causally connecting the hepatitis A or flu vaccine to WCF's anti-NMDAR encephalitis. The decision focused on the first prong of the Althen test, requiring a medical theory connecting the vaccination and the injury. The Special Master found that the epidemiologic evidence (Jedidi abstract) and case reports presented by Ms. Faulkenberry were not persuasive or reliable. He also found Dr. Marcus's proposed theories, particularly molecular mimicry, to be too general and lacking specific evidence to establish a causal link between the specific vaccines and anti-NMDAR encephalitis. The Special Master concluded that Ms. Faulkenberry's evidence did not meet the required standard of proof. On review, Judge David A. Tapp affirmed the Special Master's decision on May 14, 2025, finding that the Special Master applied the correct legal standards and did not impermissibly elevate the burden of proof. The court agreed that Ms. Faulkenberry failed to present a persuasive medical theory of causation, noting the lack of specific evidence linking the vaccines to the creation of antibodies against the specific protein causing anti-NMDAR encephalitis. The court found the Special Master's analysis to be well-reasoned and thorough, and therefore denied Ms. Faulkenberry's motion for review.

Theory of causation field:
Petitioner Amy Faulkenberry alleged that WCF, a minor vaccinated with hepatitis A and flu vaccines on February 17, 2016, developed anti-NMDAR encephalitis. Petitioner's expert, Dr. Lydia Marcus, proposed molecular mimicry as a plausible mechanism, suggesting homology between vaccine antigens and the NMDA receptor. Respondent's expert, Dr. Eric Lancaster, disputed this, citing the lack of specificity and the unlikelihood of a vaccine protein mimicking the required receptor epitope, and pointed to WCF's history of infections as a more probable cause. The Special Master denied compensation, finding Petitioner failed to establish a medical theory causally connecting the vaccines to the injury by a preponderance of the evidence, as required by the first prong of the Althen test. The Special Master found the presented epidemiologic evidence and case reports unpersuasive and Dr. Marcus's theories too general and lacking specific empirical support. Judge David A. Tapp affirmed, agreeing that Petitioner did not meet the burden of proof for Althen prong one, as the evidence did not establish a persuasive medical theory of causation, and that the Special Master correctly applied the preponderance of the evidence standard. Petitioner's counsel was M. Clay Ragsdale, IV. Respondent's counsel included Emily Manoso and Catherine Stolar before the Special Master, and Madelyn E. Weeks, Alexis B. Babcock, Heather L. Pearlman, C. Salvatore D’Alessio, and Brian M. Boynton before the Judge. Special Master was Christian J. Moran, and the reviewing Judge was David A. Tapp. Decision date was May 14, 2025.

Public staged source text:

================================================================================
DOCUMENT 1: USCOURTS-cofc-1_19-vv-00238-0
Date issued/filed: 2024-11-26
Pages: 27
Docket text: PUBLIC DECISION (Originally filed: 11/01/2024) regarding 95 DECISION of Special Master. Signed by Special Master Christian J. Moran. (jjb) Service on parties made.
--------------------------------------------------------------------------------
Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 1 of 27
In the United States Court of Federal Claims
OFFICE OF SPECIAL MASTERS
* * * * * * * * * * * * * * * * * * * * * *
AMY FAULKENBERRY, on behalf *
of her minor son, WCF, *
* No. 19-238V
Petitioner, * Special Master Christian J. Moran
*
v. *
* Filed: November 1, 2024
SECRETARY OF HEALTH *
AND HUMAN SERVICES, *
*
Respondent. *
* * * * * * * * * * * * * * * * * * * * * *
M. Clay Ragsdale, IV, Ragsdale LLC, Birmingham, AL, for petitioner;
Emily Manoso and Catherine Stolar, United States Dep’t of Justice, Washington,
DC, for respondent.
DECISION DENYING COMPENSATION1
WCF suffers from a rare neurologic condition, anti-NMDAR encephalitis.
WCF’s mother, Amy Faulkenberry, alleges that a hepatitis A vaccine and/or an
influenza (“flu”) vaccine caused WCF to develop the anti-NMDAR encephalitis.
She retained an expert, Lydia Marcus, to support her claim. The Secretary disputes
Ms. Faulkenberry’s claim that the vaccines injured WCF and has, likewise,
1 Because this Decision contains a reasoned explanation for the action taken in this case,
it must be made publicly accessible and will be posted on the United States Court of Federal
Claims’ website, and/or at https://www.govinfo.gov/app/collection/uscourts/national/cofc, in
accordance with the E-Government Act of 2002. 44 U.S.C. § 3501 note (2018) (Federal
Management and Promotion of Electronic Government Services). This means the Decision will
be available to anyone with access to the internet. In accordance with Vaccine Rule 18(b), the
parties have 14 days to identify and move to redact medical or other information, the disclosure
of which would constitute an unwarranted invasion of privacy. Any changes will appear in the
document posted on the website.

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 2 of 27
supported his position with reports from a neurologist the Secretary retained for
this litigation, Eric Lancaster. Following the submission of these reports, the
parties advocated through memoranda.
For the reasons explained below, Ms. Faulkenberry is not entitled to
compensation. Ms. Faulkenberry has based part of her claim on a level of proof
(plausibility) that is lower than the required level of proof, which is preponderant
evidence. Under the correct burden of proof, Ms. Faulkenberry has failed to show
how either a hepatitis A vaccine or a flu vaccine can cause anti-NMDAR
encephalitis. Thus, she is not entitled to compensation.
I. Background2
WCF was born in July 2014. Exhibit 11. His early development was
typical. WCF saw his primary care provider, Dr. Walker, for respiratory syncytial
virus (RSV), bronchiolitis, and an upper respiratory infection (URI) on February 3,
February 11, February 16, and February 18, 2015. Exhibit 4 at 3-6. He was
reported to be coughing, wheezing, fussy, and congested. Id. Two weeks later, on
March 2, WCF was “not sleeping at night,” “coughing all night,” and had nasal
congestion and a fever. Id. at 2.
At WCF’s nine-month check up on May 26, 2015, it was noted that ear tubes
had been placed three weeks prior. Id. at 175. WCF was diagnosed with
bronchiolitis and a URI on September 10, 2015. Id. at 172. WCF returned to Dr.
Walker for his 15-month check up on November 2, 2015. Id. at 171. He was
reported to have a cough and congestion, and to be fussy and restless at night. Id.
Two weeks later, WCF returned with a chief complaint of “cough, congestion,
fever, and ‘wheezing.’” Id. at 169. Dr. Walker diagnosed WCF with bronchiolitis
and wheezing. An RSV test was negative.
2 Events in WCF’s life are presented summarily because this case is being resolved on an
element of proof, the causal theory allegedly connecting the hepatitis A and flu vaccines to anti-
NMDAR encephalitis, that is largely independent of what happened to him. For more detailed
accounts of the medical records, see Pet’r’s Br., filed June 6, 2022, at 2-4 and Resp’t’s Revised
Br., filed Feb. 2, 2023, at 2-12.
2

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 3 of 27
WCF visited Dr. Walker’s office for his 18-month check up on February 17,
2016. Exhibit 4 at 168. During this appointment, WCF received the second dose
of the hepatitis A vaccine and flu vaccine. Id.; see also Exhibit 1 at 1.
Four days later, on February 21, 2016, WCF vomited in a Target store. An
ambulance arrived and he was taken to a local emergency room. Exhibit 12 at 5-7.
In the emergency room, doctors ran various tests and discharged him. Exhibit 9 at
74-88.
The following day, Dr. Walker saw WCF. Dr. Walker diagnosed him with a
URI and vomiting. Exhibit 4 at 167.
The next item in the medical records occurred on March 6, 2016. WCF had
convulsions. An ambulance again brought him to the hospital. Exhibit 12 at 10.
This event marks the latest date that WCF might have first manifested symptoms
of his anti-NMDAR encephalitis.
Over the next few weeks, WCF saw pediatricians and different neurologists.
He was hospitalized for three days. Exhibit 10 at 5-7. Eventually, he tested
positive for NMDA antibodies. Id. at 286.
Both experts agree that WCF’s diagnosis is anti-NMDAR encephalitis.
Exhibit 22 (Dr. Marcus’s report) at 2-4; Exhibit A (Dr. Lancaster’s report) at 4.
Anti-NMDAR Encephalitis
Anti-NMDAR encephalitis (sometimes referred to as “anti-NMDA receptor
encephalitis”) is an encephalitis associated with antibodies against the N-methyl-
D-aspartate receptors. Dalmau3at 63. Typically, the disorder presents as a
multistage illness. About 70% of patients present with initial symptoms such as
headache, fever, nausea, vomiting, and diarrhea, and progress to psychiatric
symptoms within a few days to weeks. Id. at 63-64. In children, the psychiatric
symptoms are often difficult to detect, and the first recognized symptoms may be
non-psychiatric such as seizures and status epilepticus. Id. at 64. Motor or
complex seizures develop in the early stages of anti-NMDAR. Frequency and
3 Josep Dalmau et al., Clinical experience and laboratory investigations in
patients with anti-NMDAR encephalitis, 10 LANCET NEUROL. 63 (2011); filed as
Exhibit A-2.
3

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 4 of 27
intensity of the seizures generally decreases as the disease progresses, but seizures
may resurface at any time. This phase is usually followed by a stage of decreased
responsiveness, alternating between agitation and catatonia, and marked by
abnormal movements and autonomic instability. Id. Autonomic manifestations
frequently include hyperthermia, tachycardia, hypersalivation, hypertension,
bradycardia, and hypotension. Id. Patients may become comatose and develop
hypoventilation.
About 75% of patients recover or have mild sequelae, with recovery
occurring in a multistage process in the reverse order of symptom presentation:
Patients slowly wake from coma as their autonomic functions stabilize; they
are able to follow simple commands and can have appropriate interactions
before they recover verbal functions. During this period, patients can
become psychotic and agitated again, calming as they recover further . . .
Social behavior and executive function symptoms are usually the last to
improve, and recovery can be incomplete or delayed by many months.
Id. at 66-67. Patients may be hospitalized for several months, followed by
additional months of physical and behavioral rehabilitation. Id. at 67.
After summer 2016, WCF’s development generally slowed. See Exhibit 20
at 4-6 (noting that during WCF’s well-child visit at five years old, he was assessed
as functioning as a three-year-old). Ms. Faulkenberry did not advance any
relatively recent medical records as supporting her claim for compensation. See
Pet’r’s Br. at 4.
II. Procedural History
The procedural history is straightforward, although one wrinkle developed at
the end. Represented by Mr. Ragsdale, Ms. Faulkenberry started this case by
alleging the flu vaccine and the hepatitis A vaccine caused WCF to develop “acute
encephalopathy post immunization and encephalitis/encephalomyelitis following
immunization procedure,” as well as “severe developmental delay and regression.”
Pet., filed Feb. 12, 2017, at 2. She periodically submitted medical records and
affidavits.
The Secretary opposed the claim for compensation. Resp’t’s Rep., filed July
31, 2019. The Secretary maintained that although an appropriate diagnosis was
unclear, one possibility was anti-NMDAR encephalitis. Id. at 11. (As mentioned
4

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 5 of 27
above, diagnosis is no longer an issue because after the Secretary filed his report,
both experts agreed with the diagnosis of anti-NMDAR encephalitis.) The
Secretary also contended that WCF may have manifested symptoms of anti-
NMDAR encephalitis before the vaccination, in particular, that he was fussy and
having trouble sleeping by November 2, 2015. Id. at 12. The Secretary also noted
that Ms. Faulkenberry had not presented a report from a treating doctor or from a
retained expert that causally connected the vaccinations to WCF’s condition. Id. at
12.
To facilitate the presentation of reports from experts, a set of instructions
were proposed. When the parties did not object, the instructions became final.
Order, issued Jan. 27, 2020.
The parties submitted a series of reports from experts. As mentioned, Ms.
Faulkenberry retained Dr. Marcus. Dr. Marcus is a board-certified pediatric
neurologist. Exhibit 23 (curriculum vitae). Since 2019, she has been an assistant
professor of pediatrics at the University of Alabama-Birmingham. At the time of
her first report, she had written three articles published in peer-reviewed journals.
Id. at 4. Another article reporting on a series of patients with anti-NMDAR
encephalitis was pending review. Exhibit 22 at 1. In her first report, Dr. Marcus
stated that she has treated approximately nine cases of anti-NMDAR encephalitis.
Id.
The Secretary’s expert is Dr. Lancaster. Dr. Lancaster is board certified in
neurology. Exhibit B (curriculum vitae). He has “expertise in antibody-mediated
neurologic disorders.” Id. at 1. Dr. Lancaster “completed several years of research
fellowship at the University of Pennsylvania under the mentorship of Josep
Dalmau, MD, PhD, who discovered anti-NMDAR encephalitis.” Exhibit A
(report) at 1. Dr. Lancaster has written more than 30 peer-reviewed articles, some
of which concern anti-NMDAR encephalitis. Exhibit B at 5-7. At time of his first
report, Dr. Lancaster had treated approximately 50 patients with anti-NMDAR
encephalitis. Exhibit A at 1-2. The 50 patients appear to be all adults, not
children.
Across the series of reports, Dr. Marcus and Dr. Lancaster disputed at least
three aspects of the case. First, whether there is a theory by which vaccines can
cause anti-NMDAR encephalitis. Second, when WCF first manifested a symptom
of his anti-NMDAR encephalitis. Third, whether an infection---and not the
vaccines---could have caused the anti-NMDAR encephalitis. See Exhibit 22 (Dr.
Marcus’s first report, dated Oct. 6, 2020); Exhibit A (Dr. Lancaster’s first report,
5

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 6 of 27
dated Mar. 22, 2021); Exhibit 44 (Dr. Marcus’s second report, dated June 10,
2020); and Exhibit C (Dr. Lancaster’s second report, dated Oct. 7, 2021).
Dr. Marcus listed “multiple mechanisms by which autoimmunity in
encephalitis can be induced,” focusing on molecular mimicry as a “plausible
mechanism of vaccination provoking autoimmune encephalitis.” Exhibit 22 at 3.
“In anti-NMDA receptor encephalitis, auto-antibodies are produced against the cell
surface NR1 subunit of the NMDA receptor.” Id. Dr. Marcus cited to studies to
support the point that there is “some form of molecular homology or mimicry
between influenza antigens and the NR1 subunit of the NMDA receptor.”4 Id.
In response, Dr. Lancaster disagreed with Dr. Marcus’ theory. He stated that
“The key phenomenon which absolutely must occur for anti-NMDAR encephalitis
to develop is the creation of specific antibodies targeting a specific 3-dimensional
epitope on the GluN1 receptor subunit,” and it was “highly unlikely” that a
denatured vaccine protein would have a strong resemblance to this structure.
Exhibit A at 4. Dr. Lancaster noted several deficiencies in Dr. Marcus’s
presentation of her theory: Dr. Marcus discussed multiple vaccines but did not
specify which would contain the NMDAR mimic; Dr. Marcus did not specify a
particular protein as the mimic; Dr. Marcus did not discuss the possibility of an
alternative potential trigger such as an infection; and even if a vaccine-induced
event was possible, it would not be likely, as “such an event would constitute only
a tiny fraction of the thousands of diagnosed cases.” Id. at 5.
On the point of potential alternate causes, Dr. Lancaster noted that WCF
“had a history of recurrent upper respiratory infections and otitis media throughout
childhood.” Exhibit A at 5. In particular, he highlighted symptoms of a likely
acute gastrointestinal infection on February 21, 2016 and the diagnosis of an upper
respiratory infection on February 22, 2016. Additionally, WCF was diagnosed
with maxillary sinusitis on March 6, 2016 “when he presented with the first
definite symptoms of anti-NMDAR encephalitis.” Id. “It is unclear how long this
infection had been present/developing prior to this time. There were therefore
active infections preceding the onset of the encephalitis.” Id. He acknowledged
that the night terror-like episodes from February 22 could have been early anti-
NMDAR encephalitis symptoms, “but this is not certain.” Id.
4 These are discussed further in the Analysis section of this Decision.
6

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 7 of 27
In her supplemental report, Dr. Marcus stated that even if one accepted that
WCF had a subclinical infection or if the February 21, 2016 symptoms were the
result of an infection rather than the anti-NMDAR encephalitis, “the vaccinations
received four days prior must nevertheless be considered the necessary and
substantial cause.” Exhibit 54 at 1. She opined that it is “plausible and logical”
that the immune response to an infection, coinciding with the peak response to a
vaccine, “could in combination provoke an aberrant immune response.” Id. Dr.
Marcus further opined that it was “unlikely” for a viral infection alone to trigger
such a response.
Dr. Marcus criticized Dr. Lancaster for being “unable to give an exact
mechanistic explanation” as to how an infection could trigger the onset of anti-
NMDAR encephalitis. Exhibit 54 at 2. She stated that the relationship between
“environmental triggers” and autoimmune encephalitis “is generally accepted as a
reliable theory without requiring an accompanying explanation of the exact
mechanisms involved,” and “the lack of an exact mechanism should not prevent us
from accepting the plausibility that immune response provoked by a vaccination
would be similar to that in a postinfectious process.” Id. Dr. Marcus further stated
that, although there is a “lack of sufficient epidemiology assessing NMDARE
following vaccination, epidemiological evidence does support a causal link
between AE in general and the seasonal influenza vaccine.” Id. She stated that the
burden is “to identify a plausible biologic theory that the vaccine can cause AE and
articulate the medical and scientific explanation in support of this.” Id. at 3. Dr.
Marcus maintained that the articles she cited and case reports supported the theory.
Id.
In his second report, Dr. Lancaster reiterated his opinion that infection was
the more likely cause of WCF’s anti-NMDAR encephalitis. Exhibit C at 1.
Several of the infectious symptoms would not have been caused by anti-NMDAR
encephalitis, meaning there must have been a viral infection “replicating in the
body for days before” and likely causing the disease. Id.
Dr. Lancaster also maintained that there is “no reliable, persuasive scientific
evidence that vaccines trigger anti-NMDAR encephalitis.” Exhibit C at 1. He
stated that it was insufficient for Dr. Marcus to “just assert that molecular mimicry
exists in general, and therefore we must consider this the likely disease mechanism
in this case.” Id. at 2. He clarified that his position was not requiring scientific
certainty, but that he was rather applying a “more-likely-than-not” standard. As
Dr. Marcus had not provided evidence of molecular mimicry between the vaccine
7

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 8 of 27
and disease, he did not find the theory was persuasive under that standard. Dr.
Lancaster disputed the relevance and utility of the papers cited by Dr. Marcus. Id.
at 2-3.
The submission of Dr. Lancaster’s second report appeared to complete the
disclosure of reports from experts. Ms. Faulkenberry affirmatively stated that an
additional response was not required. Pet’r’s Status Rep., filed Nov. 24, 2021.
Thus, the parties were directed to file briefs. Order, issued Jan. 21, 2022.
This order alerted the parties that the case might be resolved on the papers. Ms.
Faulkenberry filed her primary brief on July 6, 2022. With this submission, Ms.
Faulkenberry submitted three affidavits, one from WCF’s father, one from WCF’s
grandmother, and one from her. Exhibits 46-48. The affiants generally described
WCF’s health from February 21, 2016 (the date of the trip to Target) through his
hospitalization in March 2016. The affiants also affirmed the accuracy of video
testimony and incorporated that material. However, Ms. Faulkenberry did not
submit any video testimony at this time.
In the context of Ms. Faulkenberry’s initial set of materials, she submitted a
third report from Dr. Marcus. Exhibit 54. She also submitted additional medical
articles. Exhibits 49-53.
In compliance with the order scheduling briefs, the Secretary submitted his
brief on September 6, 2022. The Secretary did not add another report from Dr.
Lancaster. The Secretary noted that Ms. Faulkenberry had referenced but not
actually submitted video testimony. Resp’t’s Br., filed Sep. 6, 2022, at 11.
Ms. Faulkenberry corrected her apparent oversight by submitting videos via
a portable storage device. See CM/ECF 80. The videos, which are of poor quality,
appear to show the three affiants in a setting resembling a deposition. An
unidentified person, who does not appear on camera, asks questions and the person
answers. A court reporter recorded the session. This submission appeared to ruffle
feathers with the Secretary.
At the Secretary’s request, a status conference was held. In the status
conference, Mr. Ragsdale stated that a purpose of submitting the videos was to
allow the special master to assess the witnesses’ demeanor and credibility. He
emphasized that because the order for briefs informed the parties that a hearing
would not necessarily be held, Ms. Faulkenberry wanted to present her evidence.
Mr. Ragsdale further contended that he may present evidence in any form. In Mr.
8

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 9 of 27
Ragsdale’s view, he did not have to consult with opposing counsel about how he
submits evidence.
Acting through Ms. Manoso, the Secretary argued that to the extent that Mr.
Ragsdale conducted a deposition, the Secretary was entitled to notice. According
to Ms. Manoso, if the Secretary had been notified about a deposition, then the
Secretary would have participated in the deposition. The Secretary proposed
striking the videos.
The videos were stricken because the quality of the videos was poor, not due
to a lack of notice. Order, issued Oct. 14, 2022, citing Vaccine Rule 8(b). Ms.
Faulkenberry was given an opportunity to submit new videos with transcripts. The
Secretary also was given an opportunity to request a deposition. Id.
Ms. Faulkenberry submitted new videos and transcripts of the testimony
created by a court reporter. Exhibits 60-62; see also CM/ECF 84. This testimony
again mostly concerns whether WCF suffered from an infection when he was at
Target.
After previously raising a kerfuffle about lack of notice and wanting to
participate in any deposition, the Secretary declined to seek a deposition of the
WCF’s father, WCF’s grandmother, and Ms. Faulkenberry. Resp’t’s Status Rep.,
filed Dec. 30, 2022. However, because Ms. Faulkenberry submitted evidence after
the Secretary filed his brief, the Secretary submitted a revised brief on February 2,
2023.
Ms. Faulkenberry further argued her case. Pet’r’s Reply, filed Mar. 27,
2023. With the submission of the reply, Ms. Faulkenberry’s case is ready for
adjudication.
Ms. Faulkenberry did not seek a hearing. See Pet’r’s Br. The Secretary
proposed that the case be resolved on the written record. Resp’t’s Revised Br. at
54. Because both parties have had a fair opportunity to present their evidence and
their arguments, an adjudication based upon the papers is appropriate. See
Kreizenbeck v. Sec'y of Health & Hum. Servs., 945 F.3d 1362, 1365 (Fed. Cir.
2018).
III. Standards for Adjudication
A petitioner is required to establish her case by a preponderance of the
evidence. 42 U.S.C. § 300aa–13(1)(a). The preponderance of the evidence
9

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 10 of 27
standard requires a “trier of fact to believe that the existence of a fact is more
probable than its nonexistence before [he] may find in favor of the party who has
the burden to persuade the judge of the fact's existence.” Moberly v. Sec’y of
Health & Hum. Servs., 592 F.3d 1315, 1322 n.2 (Fed. Cir. 2010) (citations
omitted). Proof of medical certainty is not required. Bunting v. Sec’y of Health &
Hum. Servs., 931 F.2d 867, 873 (Fed. Cir. 1991).
Distinguishing between “preponderant evidence” and “medical certainty” is
important because a special master should not impose an evidentiary burden that is
too high. Andreu v. Sec’y of Health & Hum. Servs., 569 F.3d 1367, 1379-80 (Fed.
Cir. 2009) (reversing special master's decision that petitioners were not entitled to
compensation); see also Lampe v. Sec’y of Health & Hum. Servs., 219 F.3d 1357
(Fed. Cir. 2000); Hodges v. Sec’y of Health & Hum. Servs., 9 F.3d 958, 961 (Fed.
Cir. 1993) (disagreeing with dissenting judge's contention that the special master
confused preponderance of the evidence with medical certainty).
When a petitioner, like Ms. Faulkenberry, claims that a vaccine caused an
injury not listed on the Vaccine Injury Table, such as anti-NMDAR encephalitis,
the elements of a petitioner’s case are well defined. A petitioner bears a burden “to
show by preponderant evidence that the vaccination brought about [the vaccinee’s]
injury by providing: (1) a medical theory causally connecting the vaccination and
the injury; (2) a logical sequence of cause and effect showing that the vaccination
was the reason for the injury; and (3) a showing of a proximate temporal
relationship between vaccination and injury.” Althen v. Sec’y of Health & Hum.
Servs., 418 F.3d 1274, 1278 (Fed. Cir. 2005).
Ms. Faulkenberry’s case is being resolved upon prong one exclusively.
Thus, an examination of the remaining prongs is not required.
IV. Analysis
Three steps are required to evaluate Ms. Faulkenberry’s assertion that a flu
vaccine can cause anti-NMDAR encephalitis. The first is to determine the level of
proof on this element. The second is to assess whether the evidence satisfies the
standard. An additional aspect is to compare the outcome in Ms. Faulkenberry’s
case with the outcome in other cases evaluating Althen’s first prong in the context
of a flu vaccine allegedly causing anti-NMDAR encephalitis.
10

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 11 of 27
A. Burden of Proof for Althen Prong One
Ms. Faulkenberry recognizes that her burden of proof is preponderant
evidence. Pet’r’s Br. at 4, citing 42 U.S.C. § 300aa–13(a)(1)(A). But Ms.
Faulkenberry argues that a medical theory proposing a causal connection between
a vaccine and an injury needs to be only plausible. Id. at 5, 7 (citing cases); Pet’r’s
Reply at 1-3. Consistent with this position, Ms. Faulkenberry contends that the
theory Dr. Marcus proposes is plausible. See, e.g. Pet’r’s Br. at 12-15.
On the other hand, the Secretary argues that any medical theory must be
persuasive and reliable. Resp’t’s Br. at 31-32. The Secretary, therefore, criticizes
Ms. Faulkenberry for using the wrong standard. Id.
Plausibility requires a lower degree of evidence than probability. Cerrone v.
Sec’y of Health & Hum. Servs., No. 17-1158V, 2023 WL 9185794, 168 Fed. Cl.
745, 753-54 (Fed. Cl. Nov. 6, 2023), appeal docketed, No. 24-1281 (Fed. Cir. Dec.
22, 2023); Jane Doe 93 v. Sec’y of Health & Hum. Servs., No. Redacted, 2011 WL
2326966, at *1 (Fed. Cl. Spec. Mstr. May 9, 2011); C.f. Amarin Pharm., Inc. v.
Hikma Pharm., USA, Inc., 104 F.4th 1370, 1377 (Fed. Cir. 2024) (distinguishing
between plausibility and probability in the context of evaluating a motion to
dismiss filed pursuant to Rule 12(b)(6) of the Federal Rules of Civil Procedure).
An evidentiary scale might include markers for “what is possible,” “what is
plausible,” “what is persuasive,” “what is convincing,” and “what is certain.”
The question of whether the medical theory must be “probable” or
“plausible” has arisen in multiple recent opinions. Generally, but not universally,
judges from the Court of Federal Claims have held that the burden of proof for
Althen prong one is persuasive evidence.5 Examples of cases with particularly
strong reasoning include: Trollinger v. Sec’y of Health & Hum. Servs., 167 Fed.
Cl. 127, 137 (2023), Howard v. Sec’y of Health & Hum. Servs., No. 16-1592V,
2023 WL 4117370, at *4-5 (Fed. Cl. May 18, 2023) (discussing cases decided
before Moberly), aff’d without opinion, No. 2023-1816, 2024 WL 2873301 (Fed.
Cir. June 7, 2024), and Townsend v. Sec’y of Health & Hum. Servs., 170 Fed. Cl.
130 (Feb. 22, 2024), appeal docketed, No. 2024-1740 (Fed. Cir. Apr. 25, 2024).
5 These opinions from the Court of Federal Claims are not binding precedent. However,
they remain a type of precedent from an appellate tribunal capable of persuading by their
reasoning.
11

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 12 of 27
One prominent example of an opinion contrary to this trend is Hoffman v. Sec’y of
Health & Hum. Servs., 172 Fed. Cl. 477 (2024).
As suggested in cases such as Trollinger, Howard, and Townsend, the
Federal Circuit has stated “the petitioner must do more than demonstrate a
‘plausible’ or ‘possible’ causal link between the vaccination and the injury; he
must prove his case by a preponderance of the evidence.” W.C. v. Sec’y of Health
& Hum. Servs., 704 F.3d 1352, 1356 (Fed. Cir. 2013).
A holding that Ms. Faulkenberry must present a persuasive theory, by itself,
may justify a finding that Ms. Faulkenberry did not meet her burden of proof. As
noted above, Ms. Faulkenberry consistently contended that her proof of a medical
theory was plausible. See, e.g. Pet’r’s Br. at 15 (Dr. Marcus opines that “these
theoretical mechanisms [are] reliably plausible explanations”); see also Exhibit 54
at 3 (Dr. Marcus’s third report stating that her undertaking is “to identify a
plausible biologic theory that the vaccine can cause AE and articulate the medical
and scientific explanation in support of this"). Proof at merely a plausible level is
insufficient as a matter of law, as illustrated in Boatmon v. Sec’y of Health &
Hum. Servs., 941 F.3d 1351 (Fed. Cir. 2019). There, the petitioners’ expert
presented a theory that was “only ‘plausible.’” Id. at 1360, quoting the special
master’s decision. The Federal Circuit held that the “Special Master erred in
allowing a theory that was at best ‘plausible’ to satisfy the Petitioners’ burden of
proof.” Id.
Given the outcome in Boatmon, which was a Federal Circuit’s affirmance of
a judgment denying compensation, it appears that a similar outcome should be
reached here, a decision denying compensation. However, it is conceivable that
the evidence surpasses the correct threshold even if Ms. Faulkenberry, herself, did
not characterize her case that way. For this reason and to demonstrate that all
evidence relevant to Althen prong one has been considered, the undersigned will
next evaluate Ms. Faulkenberry’s proposed theories.
B. Ms. Faulkenberry’s Evidence
To meet her burden regarding Althen prong one, Ms. Faulkenberry
presented various types of evidence. These include: (1) epidemiologic evidence,
(2) case reports, and (3) the opinion of Dr. Marcus.
12

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 13 of 27
1. Epidemiologic Evidence
Ms. Faulkenberry asserts that she “has offered into evidence recently
released epidemiology that persuasively demonstrates an increased risk of
encephalitis following the flu vaccine.” Pet’r’s Br. at 15 n.10, citing Jedidi6;
accord id. at 17, Pet’r’s Reply at 6-7. This assertion is not persuasive for multiple
reasons.
The journal Neurology published an abstract by Nour Jedidi and three other
authors, including Nizar Souayah, on April 13, 2021. Jedidi at 1. Despite its
publication more than three years ago, the Jedidi abstract has not been cited in any
opinion by a special master. If the Jedidi article is potentially as powerful as
described, this omission seems surprising.
The January 2, 2020 Instructions for experts stated: “the full version of
[medical articles] must be filed [and] [a]bstracts are not permitted.” Restricting the
submission of abstracts reflects the lack of reliability of abstracts. Hazlehurst v.
Sec’y of Health & Hum. Servs., 88 Fed. Cl. 473, 488 (2009) (“poster presentations
are not subject to peer review and as a result do not receive the scrutiny of the
scientific community that confers an element of reliability on published test
results"), aff’d, 604 F.3d 1343 (Fed. Cir. 2010); Hennessey v. Sec’y of Health &
Hum. Servs., No. 01-190V, 2009 WL 1709053, at *33 (Fed. Cl. Spec. Mstr. May
29, 2009) (“because I cannot determine from the abstract if this was a peer
reviewed study, I have elected to place no weight upon it”), mot. for rev. denied,
91 Fed. Cl. 126 (2010).
In any event, the limited information available in the abstract shows a
methodological flaw. The source of information for the Jedidi study was the
Vaccine Adverse Event Reporting System database. The VAERS database is not a
reliable source for conducting epidemiologic studies. H.L. v. Sec’y of Health &
Hum. Servs., 715 Fed. App'x 990, 995-96 (Fed. Cir. 2017); Analla v. Sec’y of
Health & Hum. Servs., 70 Fed. Cl. 552, 558 (2006); Ryman v. Sec’y of Health &
Hum. Servs., 65 Fed. Cl. 35, 39-40 (2005); Tompkins v. Sec’y of Health & Hum.
Servs., No. 10-261V, 2013 WL 3498652, at *26 n.66 (Fed. Cl. Spec. Mstr. June
6 Nour Jedidi et al., Encephalitis after Influenza Vaccination in the United
States: A CDC/FDA Vaccine Adverse Event Reporting System Study, 1990–2018
(3052). 19 NEUROLOGY, supplement 15 (2021); filed as Exhibit 50.
13

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 14 of 27
21, 2013) (criticizing a study by Dr. Souayah, that used VAERS data and also
“lacked an unvaccinated comparison population, rendering this study's conclusions
poor evidence of causality”), mot. for rev. denied, 117 Fed. Cl. 713 (2014).
For these reasons, the Jedidi abstract provides little, if any, support for the
proposition that the flu vaccine causes encephalitis.
2. Case Reports
In addition to advancing the Jedidi abstract, Ms. Faulkenberry puts forward
four case reports: Cartisano, Hoffman, Endres, and Ussel. Pet’r’s Br. at 17-18; see
also Pet’r’s Reply at 6-7. However, case reports are not persuasive evidence
regarding causation.
In the context of litigation, case reports often do not receive much
consideration as evidence of causation. In general, case reports provide little, if
any, information helpful to determining causation because they present only a
temporal sequence of events in which the vaccination preceded an adverse health
event. See K.O. v. Sec’y of Health & Hum. Servs., No. 13-472V, 2016 WL
7634491, at *11-12 (Fed. Cl. Spec. Mstr. July 7, 2016) (discussing appellate
precedent on case reports).
Thus, ample authority supports the proposition that case reports generally
are not helpful in assessing causation. In accord with these authorities, the
undersigned declines to afford the case reports much weight in determining
whether the flu vaccine can cause anti-NMDAR encephalitis. Moreover, there are
specific limitations about the case reports in this case.
The Cartisano case report is actually an abstract. See Cartisano7; see also
Pet’r’s Status Rep., filed April 9, 2024. As previously mentioned, abstracts carry
less reliability than full articles.
7 Teodora Cartisano and Jennifer Kicker, Anti-N-methyl-D-Aspartate
Receptor Encephalitis in 7-Month Old Infant Following Influenza Vaccination
(P5.136), 86 NEUROLOGY, supplement 16 (2016); filed as Exhibit 51.
14

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 15 of 27
Two other case reports involve vaccines other than the vaccines WCF
received. See Endres8 (case report about tetanus-diphtheria-acellular pertussis and
polio vaccine); Hoffman9 (case report about tetanus-diphtheria-acellular pertussis
and polio vaccine). Another case report involves a disease other than anti-
NMDAR encephalitis. Ussel10 at 12 (noting testing for anti-NMDAR antibodies
were negative). Thus, extrapolation would be required to draw conclusions from
these examples. See Alsaadeh v. Sec’y of Health & Hum. Servs., No. 19-1097V,
2024 WL 694072, at *32-33 (Fed. Cl. Spec. Mstr. Jan. 23, 2024); Thompson v.
Sec’y of Health & Hum. Servs., No. 18-1217, 2023 WL 9053982, at *15 (Fed. Cl.
Spec. Mstr. Dec. 5, 2023).
For these reasons, the case reports are entitled to relatively little weight.
3. Theory or Theories Dr. Marcus Advances
a) Disclosure of Theories
With respect to disclosing an opinion as to how either the hepatitis A
vaccine or flu vaccine can cause anti-NMDAR encephalitis, the reports of Dr.
Marcus may not be (or may be) a model of clarity. The struggle seems to be that
there is little basis for linking the hepatitis A vaccine or flu vaccine to anti-
NMDAR encephalitis.
In Dr. Marcus’s first report, she disclosed a list of theories: “There are
multiple mechanisms by which autoimmunity in encephalitis can be induced,
including host infection, occult neoplasm, and vaccine reaction, which have been
reviewed in the medical literature.” Exhibit 22 at 4 (footnote omitted). From this
group, it appears that Dr. Marcus chose molecular mimicry: “In my opinion,
8 Dominique Endres, Psychiatric Presentation of Anti-NMDA Receptor
Encephalitis, 10 FRONT. NEUROL. 1086 (2019); filed as Exhibit 52.
9 Caroline Hofmann et al., Anti-NMDA receptor encephalitis after TdaP-IPV
booster vaccination: cause or coincidence?, 258 J. NEUROL. 500 (2010); filed as
Exhibit 30.
10 Isabella Van Ussel et al., Encephalitis related to a H1N1 vaccination: case
report and review of the literature, 124 CLIN. NEUROL. NEUROSURG. 8 (2014); filed
as Exhibit 36.
15

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 16 of 27
molecular mimicry is a reliable and accepted theory within the medical community
that persuasively explains how the vaccines received by WCF more probably than
not could cause the onset of anti-NMDARE.” Id. In support of this opinion, Dr.
Marcus cited some studies and some case reports that are discussed in this
decision.
After Dr. Lancaster criticized this opinion, Dr. Marcus defended it. At
times, she appears to have taken on the role of a lawyer arguing over the burden of
proof: “it is not necessary to present mechanistic evidence that is deemed
convincing to the scientific community as that is beyond the scope of the issue.”
Exhibit 44 at 4. She continued to discuss medical literature including one article
by C. Hammer and others, in which the authors concluded “that loss of blood brain
barrier integrity could be a contributing risk factor” for the development of anti-
NMDAR encephalitis. Id. at 4-5 (citing Hammer at 1148)11. Other than this
mention, Dr. Marcus did not elaborate on a theory involving the blood brain
barrier. Further, Dr. Marcus did not explain how a study about an influenza
infection might breach the blood-brain barrier could extend to an influenza
vaccination. Any such explanation would need, at a minimum, to address that
influenza viruses replicate, and the flu vaccine does not. Instead, Dr. Marcus
maintained that molecular mimicry is a “reliable” “theoretical framework.” Id.
at 5.
Dr. Marcus’s final report was written and filed in the context of the order for
briefs. She, again, listed different theories. Many (and perhaps most)
“autoimmune conditions” “have theoretical, multifactorial, and incompletely
described mechanisms. In cases of presumed postinfectious autoimmunity,
proposed mechanisms include polyclonal lymphocyte activation, epitope
spreading, molecular mimicry, and antigen complementarity.” Exhibit 54 at 2. Dr.
Marcus added: “Also widely accepted is the fact that these principles might be at
play in an autoimmune condition despite the fact that we currently do not have a
tested, exact mechanistic description in a specific condition. In our case, the lack
of an exact mechanism should not prevent us from accepting the plausibility that
[an] immune response provoked by a vaccination would be similar to that in a
11 C. Hammer et al., Neuropsychiatric disease relevance of circulating anti-
NMDA receptor autoantibodies depends on blood-brain barrier integrity, 10 MOL.
PSYCHIATRY 1143 (2014); filed as Exhibit 40.
16

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 17 of 27
postinfectious process.” Id. In this statement, Dr. Marcus appears to concede that
there is a “lack of an exact mechanism.”
Ms. Faulkenberry’s brief is consistent with Dr. Marcus’s reports in that Ms.
Faulkenberry lists different theories without really engaging with the theory in a
meaningful way. “The reliable immunologic theories are explained and include
blood brain [barrier] disruption, molecular mimicry and epitope spreading.” Pet’r’s
Br. at 24. “Beyond the accepted theoretical neuroimmunology framework, the
specific mechanisms by which an environmental immune provocation develops
into AE [autoimmune encephalitis], including the subset of AE involved here are
not generally known.”
To a degree, Dr. Marcus and Ms. Faulkenberry have tended to focus upon
molecular mimicry. This was the Secretary’s understanding as well. Resp’t’s
Revised Br. at 15 n.5. Multiple appellate cases have provided guidance on how
special masters should assess molecular mimicry. These non-binding precedents
are discussed as a preliminary matter. After this foundation, the evidence is further
evaluated.
b) Appellate Cases regarding Molecular Mimicry
Because special masters are often called upon to evaluate the persuasiveness
of the theory of molecular mimicry, the Court of Federal Claims and the Court of
Appeals for the Federal Circuit have considered molecular mimicry in their
appellate role of reviewing opinions.12 In December 2019, the undersigned
identified the leading precedents as W.C. v. Sec’y of Health & Hum. Servs., 704
F.3d 1352 (Fed. Cir. 2013), and Caves v. Sec’y of Dep’t. of Health & Hum. Servs.,
100 Fed. Cl. 119 (2011), aff’d sub nom., 463 F. App’x 932 (Fed. Cir. 2012).
Tullio v. Sec’y of Health & Hum. Servs., No. 15-51V, 2019 WL 7580149, at *12-
14 (Fed. Cl. Spec. Mstr. Dec. 19, 2019), mot. for rev. denied, 149 Fed. Cl. 448
(2020). While Tullio describes those cases in more detail, their essence appears to
be that although molecular mimicry is accepted in some contexts, special masters
may properly require some empirical evidence to show that a particular vaccine
can cause a particular disease.
12 The briefs would have been improved if they had discussed any appellate
cases about molecular mimicry.
17

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 18 of 27
In the next approximately four years, appellate authorities reviewing
decisions involving molecular mimicry have generally endorsed the approach of
looking for some evidence that persuasively shows that a portion of a vaccine
resembles a portion of human tissue, which contributes to causing the disease, and
that the immune system will respond to the relevant amino acid sequence.13
Chronologically, the list of more recent appellate cases begins with the opinion in
Tullio, which denied the motion for review. 149 Fed. Cl. 448, 467-68 (2020).
Another example in which the Court of Federal Claims held that the special
master did not elevate the petitioner’s burden of proof in the context of evaluating
the theory of molecular mimicry is Morgan v. Sec’y of Health & Hum. Servs., 148
Fed. Cl. 454, 476-77 (2020), aff’d in non-precedential opinion, 850 F. App’x 775
(Fed. Cir. 2021). In Morgan, the Chief Special Master found that petitioner had
not presented persuasive evidence about a relevant antibody. Id. at 477. The Chief
Special Master also noted that the articles about the relevant disease do not list the
wild flu virus as potentially causing the disease. Id. When examining this
analysis, the Court of Federal Claims concluded: “the Chief Special Master did not
raise the burden of causation in this case; petitioner simply failed to meet it.” Id.
The Federal Circuit also evaluated the Chief Special Master’s approach in
Morgan. The Federal Circuit concluded: “We discern no error in the special
master’s causation analysis.” 850 F. App’x 775, 784 (Fed. Cir. 2021).
Most other recent appellate cases follow this path. See, e.g., Duncan v.
Sec’y of Health & Hum. Servs., 153 Fed. Cl. 642, 661 (2021) (finding the special
master did not err in rejecting a bare assertion of molecular mimicry); Caredio v.
Sec’y of Health & Hum. Servs., No. 17-79V, 2021 WL 6058835, at *11 (Fed. Cl.
Dec. 3, 2021) (indicating that a special master did not err in requiring more than
homology and citing Tullio); Yalacki v. Sec’y of Health & Hum. Servs., 146 Fed.
Cl. 80, 91-92 (2019) (ruling that special master did not err in looking for reliable
evidence to support molecular mimicry as a theory); but see Patton v. Sec’y of
Health & Hum. Servs., 157 Fed. Cl. 159, 169 (2021) (finding that a special master
13 The term “homology” is used when discussing molecular mimicry. “Homology” is
defined as “the quality of being homologous; the morphological identity of corresponding parts;
structural similarity due to descent from a common form.” Dorland’s at 868.
18

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 19 of 27
erred in requiring petitioner submit a study to establish medical theory causally
connecting flu vaccine to brachial neuritis).
The Court of Federal Claims explained why petitioners must present some
evidence to show the persuasiveness of molecular mimicry as a theory in their
cases. Dennington v. Sec’y of Health & Hum. Servs., 167 Fed. Cl. 640 (2023),
appeal withdrawn, No. 2024-1214 (Fed. Cir. Mar. 25, 2024). There, Ms.
Dennington alleged that a tetanus-diphtheria-acellular pertussis (“Tdap”) vaccine
caused her to develop Guillain-Barré syndrome (GBS). Id. at 644. She supported
her claim with two reports from a neurologist, Carlo Tornatore, who put forward
molecular mimicry. Id. at 647-49. The Chief Special Master denied entitlement.
Id. at 656.
The Court of Federal Claims denied a motion for review because the Chief
Special Master did not commit any error in evaluating Ms. Dennington’s prong one
evidence. The Court emphasized the lack of evidence supporting Dr. Tornatore’s
opinion:
• “While Petitioner and Dr. Tornatore put forth the well-established
medical theory of molecular mimicry as the mechanism through
which the Tdap vaccine could cause GBS, nowhere in Dr. Tornatore’s
expert reports, nor in Petitioner’s briefs, do they specifically tie the
Tdap vaccine to GBS through molecular mimicry.” Id. at 653.
• “Dr. Tornatore never actually explains how molecular mimicry might
occur from the Tdap vaccine specifically, nor does he elaborate on
how molecular mimicry could cause the specific autoimmune system
reaction that could cause GBS.” Id.
• “There is nothing in Dr. Tornatore’s report that explains or even
alludes to what antigens or structures in the Tdap vaccine could share
homology with possible host antigens and how these antigens could
react in the manner GBS is believed to progress.” Id. at 654.
• “The literature upon which he relies make no mention of any causal
connection between GBS and the Tdap vaccine.” Id.
Based upon these observations, the Court criticized the lack of specificity in
Dr. Tornatore’s opinions:
19

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 20 of 27
In fact, because Dr. Tornatore does not offer any specific
explanation as to the distinct connection between Tdap,
molecular mimicry, and GBS, one could take Dr.
Tornatore’s causation theory and substitute any table
vaccine (e.g., the measles vaccine) and any autoimmune
disorder (e.g., autoimmune encephalitis) and Dr.
Tornatore’s expert report’s discussion of molecular
mimicry would require absolutely no changes. That is
how general her molecular mimicry theory is—it does
not matter which vaccine and which autoimmune
disorder are plugged in. But Althen prong one requires
more.
Id.
In accordance with precedents such as W.C., Caves, Tulio, Yalacki, and
Dennington, the undersigned will look to see whether any evidence supports the
theory that flu vaccine can cause anti-NMDAR encephalitis.
c) Evidence regarding Molecular Mimicry
Apart from case reports and one study of the VAERS database, which are
discussed above, Dr. Marcus does not persuasively establish the reliability of the
molecular mimicry theory in the context of anti-NMDAR encephalitis. Her reports
are general, lacking any specific explanation for how the hepatitis A vaccine or the
flu vaccine can lead to anti-NMDAR encephalitis. See Exhibit 22 at 3, Exhibit 44
at 3-5, Exhibit 54.
The Secretary pointed out the generalities of Dr. Marcus’s opinion:
Preliminarily, there is a foundational deficit to
petitioner’s molecular mimicry theory of causation.
Here, WCF received two vaccinations on February 16,
2016, a Hep A vaccine and a flu vaccine. For purposes
of a vaccine theory of causation based on molecular
mimicry, it is not clear whether Dr. Marcus believes that
the alleged mimic resides in the flu vaccine, Hep A
vaccine, or some combination. . . . Additionally, Dr.
Marcus uses a generalized term, “autoimmune
encephalitis,” so it is not apparent whether the
20

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 21 of 27
percentages she cites apply to WCF’s specific condition
of anti-NMDAR encephalitis or other types of
encephalitis.
Resp’t’s Br. at 24-25. This description is apt.
In reply, Ms. Faulkenberry acknowledged that the Secretary “contends that
Petitioner’s theory is too generalized to be a more likely than not explanation for
how the flu and Hep A vaccines can cause anti-NMDAR encephalitis.” Pet’r’s
Reply at 3. Ms. Faulkenberry’s reply does not enhance her case by pointing to
evidence that makes her theory more specific. Rather, Ms. Faulkenberry cites
rulings from special masters and argues that more specific evidence is not required.
Id. at 3-5. As discussed in section IV.B.3.b) above, the general trend from
appellate tribunals is that more specifics are required to carry the burden regarding
Althen prong one.
The reasoning in opinions such as Dennington is consistent with an opinion
from Dr. Lancaster about the generality of Dr. Marcus’s opinion:
Dr. Marcus argues that “the medical community
considers molecular mimicry, acting possibly in
combination with other mechanisms, to be a reliable
theory explaining vaccine-induced autoimmunity.”
Ex 44. P3. This statement conflates a very general
biological fact, namely that molecular mimicry has been
proven to occur in very rare cases for specific diseases
with specific triggers, with the question of whether
molecular mimicry actually occurs for this specific
disease with this specific mimic. Dr. Marcus does not
provide any reliable evidence that molecular mimicry
occurs for the specific vaccine in question to cause anti-
NMDAR encephalitis. It is entirely insufficient for Dr.
Marcus to just assert that molecular mimicry exists in
general, and therefore we must consider this the likely
disease mechanism in this case. If we accept Dr.
Marcus's reasoning, then we would have to conclude that
any vaccination can cause every autoimmune disease
simply because molecular mimicry has been shown with
other stimuli and other diseases.
21

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 22 of 27
Exhibit C at 1-2.
In Dr. Lancaster’s first report, he stated that: “The key phenomenon which
absolutely must occur for anti-NMDAR encephalitis to develop is the creation of
specific antibodies targeting a specific 3-dimensional epitope on the GluN1
receptor subunit. These antibodies recognize the receptor in its intact membrane
conformation.” Exhibit A at 4. Although using slightly different nomenclature,
Dr. Marcus agreed that “In anti-NMDA receptor encephalitis, auto-antibodies are
produced against the cell surface NRl subunit of the NMDA receptor.” Exhibit 22
at 3. Yet, Dr. Marcus does not hypothesize any way that the hepatitis A vaccine
and/or the flu vaccine leads to the creation of antibodies to the specific protein that
causes anti-NMDAR encephalitis. See Pet’r’s Br. at 13 (“How environmental
triggers induce the formation of the pathological auto-antibodies involved in anti-
NMDARE and the pathways by which those antibodies reach the cell antigens
cannot be identified with specificity"). This leaves a gap in Dr. Marcus’s opinion
regarding molecular mimicry and deprives Dr. Marcus’s opinion of sufficient
evidentiary weight to be reliable. “[A] Special Master need not credit expert
opinion testimony that is connected to the existing data or methodology ‘only by
the ipse dixit of the expert,’ or where ‘there is simply too great an analytical gap
between the data and the opinion proffered.’” Jarvis v. Sec'y of the Dep't of Health
& Hum. Servs., 99 Fed. Cl. 47, 61 (2011), quoting Gen. Elec. Co. v. Joiner, 522
U.S. 136, 146 (1997).
In her discussion of molecular mimicry, Dr. Marcus cited an article by
Wang. In Wang, a group of researchers identified an instance in which a two-year-
old girl received her second dose of a Japanese encephalitis vaccine. She
developed various problems and within approximately one month, was diagnosed
with anti-NMDA receptor encephalitis. Wang at pdf 2-314.
The researchers wanted to investigate whether the Japanese encephalitis
vaccine and other vaccines could be associated with anti-NMDAR encephalitis.
To explore this possibility, the researchers analyzed the microRNA (“miRNA”).
Id. at 3. “miRNAs are small RNA molecules approximately 22 nucleotides long
that can upregulate or downregulate their target gene expression post-
transcriptionally.” Id. The researchers also conducted a “phylogenetic analysis.”
14 Hsiuying Wang, Anti-NMDA Receptor Encephalitis and Vaccination, 18
INT. J. MOL. SCI. 193 (2017); filed as Exhibit 41.
22

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 23 of 27
Id. “Phylogeny” refers to “the complete developmental history of a group of
organisms.” Dorland’s at 1422. The researchers examined six vaccines of which
the most relevant for this case is the H1N1 influenza vaccine. (The researchers did
not analyze the hepatitis A vaccine.) Wang at pdf 3.
The authors recognized that one particular miRNA, let-7f, was
downregulated in H1N1 infected cells. Id. at 3. Let-7f is also “downregulated in
anti-NMDAR encephalitis compared with the negative controls.” Id. at 4. How
these findings related to each other, if they do relate to each other, was not
discussed in the article. The article concludes that “it is worth investigating the
association between JE vaccination and anti-NMDA receptor encephalitis.” Wang
at pdf 8.
Dr. Marcus did little to explain either the methodology or the results. See
Exhibit 22 at 3. Something more from Dr. Marcus could have enhanced the value
of her opinion. In contrast, Dr. Lancaster explained that “The levels of various
miRNA change naturally to help regulate the levels of various proteins throughout
life, and can change under many disease conditions including cancer, infections,
etc.” Exhibit C at 3. Dr. Marcus did not propose that the Wang group’s use of a
“phylogenetic analysis” could serve as a proxy for a showing of some homology.
See Exhibit 54 at 3.
Dr. Marcus also cited the Hammer article in her discussion of molecular
mimicry. She wrote: “a study of almost 3,000 patients tested for anti-NMDAR
antibodies found [a] higher prevalence of anti-NMDAR antibodies in patients with
anti-influenza A IgG.” Exhibit 22 at 3. However, Dr. Lancaster questioned the
value of this article, as “This paper did not study patients with antiNMDAR
encephalitis.” Exhibit C at 4. Dr. Lancaster’s criticism seems well-founded. The
lack of rebuttal from Dr. Marcus (see Exhibit 54) diminishes the value of the
Hammer article.
d) Other Theories
As noted above, Dr. Marcus at least mentioned theories other than molecular
mimicry. For example, she listed “host infection, occult neoplasm,” “polyclonal
lymphocyte activation, epitope spreading, . . . and antigen complementarity.”
Exhibit 22 at 4, Exhibit 54 at 2. None of these ideas are developed sufficiently
enough for them to be persuasive. See Baron v. Sec’y of Health & Human Servs.,
No. 14-341V, 2019 WL 2273484, at *17 (Fed. Cl. Spec. Mstr. Mar. 18, 2019)
(petitioners “need to propose something more than taking a vague ‘kitchen sink’
23

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 24 of 27
approach and listing eleven mechanisms that have been previously submitted in the
Program for claims of vaccine-caused injury with various degrees of success.
Petitioners have listed many possibilities but have not identified a sound and
reliable explanation that can be applied to the vaccines and injury in this case”).
Likewise, Ms. Faulkenberry’s brief barely mentions theories other than molecular
mimicry. As such, any reliance on theories other than molecular mimicry is not
persuasive.
4. Summary regarding Ms. Faulkenberry’s Evidence
Ms. Faulkenberry’s evidence regarding how the hepatitis A vaccine and/or
the flu vaccine can cause anti-NMDAR encephalitis falls short. The study she
identifies as an epidemiologic study (Jedidi) has not been shown to be reliable.
The case reports are also problematic as discussed above.
Perhaps due to a lack of supporting articles, Dr. Marcus struggled to present
a theory to explain how the vaccinations can cause anti-NMDAR encephalitis.
Although literature is not required, Althen, 418 F.3d 1274, “a scientific theory that
lacks any empirical support will have limited persuasive force.” Caves v. Sec’y of
Health & Hum. Servs., 100 Fed. Cl. 119, 134 (2011), aff’d without opinion, 463 F.
App’x 932 (Fed. Cir. 2012). The theory that Dr. Marcus proposed as being the
most likely, molecular mimicry, is not persuasive in this context.
For these reasons, Ms. Faulkenberry has not met her burden of proof
regarding Althen prong one.
C. Other Cases from the Vaccine Program
The foregoing analysis is based upon the evidence and the parties’
arguments about the evidence. See 42 U.S.C. § 300aa–13(a)(1) (directing a special
master to consider “the record as a whole”). Another point meriting consideration
is how other judicial officers have addressed similar points, even though those
resolutions are not binding. Boatmon v. Sec’y of Health & Hum. Servs., 941 F.3d
1351, 1358-59 (Fed. Cir. 2019). Decisions from special masters do not bind other
special masters because, in part, different special masters can weigh even similar
evidentiary records differently. Lampe v. Sec’y of Health & Hum. Servs., 219
F.3d 1357, 1368 (Fed. Cir. 2000).
The parties were encouraged to identify relevant cases involving a reasoned
outcome. Order for Briefs, issued July 18, 2022, at 6. Ms. Faulkenberry cited
24

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 25 of 27
Agarwal v. Sec’y of Health & Hum. Servs., No. 16-191V, 2020 WL 5651683 (Fed.
Cl. Spec. Mstr. Aug. 31, 2020) and Al-Uffi v. Sec’y of Health & Hum. Servs., No.
13-956V, 2017 WL 1713113 (Fed. Cl. Spec. Mstr. Feb. 22, 2017). Pet’r’s Br. at
10-11, 31 n.24; Pet’r’s Reply at 4-5.
In Agarwal, the petitioners claimed a tetanus vaccine caused their child to
suffer autoimmune limbic encephalitis. 2020 WL 5651683, at *1. (Autoimmune
limbic encephalitis is not exactly the same as anti-NMDAR encephalitis, which is
the condition at issue in Ms. Faulkenberry’s case.) The special master credited
petitioners’ proof on prong one because, in part, portions of the tetanus vaccine
were homologous with nerve tissue. Id. at *25. Ms. Faulkenberry did not present
this type of evidence.
In Al-Uffi, the petitioner alleged the human papillomavirus vaccine caused
her son to suffer anti-NMDA receptor encephalitis, which is abbreviated in Al-Uffi
as “ARE.” 2017 WL 1713113, at * 1. Petitioner prevailed on prong one because
her “not particularly robust” evidence concerning molecular mimicry met the
“relatively lenient preponderance standard that is applied in Program cases.” Id. at
*21. However, after Al-Uffi, non-binding but still persuasive precedents from the
Court of Federal Claims have invigorated the standards of proof regarding
molecular mimicry. See, e.g., Dennington, Morgan, Yalacki. Thus, Al-Uffi
carries relatively little precedential force.
By way of contrast, the Secretary cited Baron v. Sec’y of Health & Hum.
Servs., No. 14-341V, 2019 WL 2273484 (Fed. Cl. Spec. Mstr. Mar. 18, 2019).
Resp’t’s Revised Br. at 34. There, the petitioners alleged that the hepatitis A
and/or the flu vaccine caused their child to suffer from anti-NMDAR encephalitis.
Id. at *1. In defending against this claim, the Secretary retained Dr. Lancaster,
who has also opined in Ms. Faulkenberry’s case. See id. at *4. The special master
found that the Barons had not met their burden of proof regarding Althen prong
one because, in part, their expert could not link either the hepatitis A vaccine or the
flu vaccine to the “very specific antibody” required in anti-NMDAR encephalitis.
Id. at *17. This same flaw is present in Dr. Marcus’s opinion.
The focus on the specific antibody is also present in a case another special
master decided. L.R. by and through Baxter v. Sec’y of Health & Hum. Servs.,
No. 16-922V, 2024 WL 1912575, at *21 (Fed. Cl. Spec. Mstr. Mar. 28, 2024).
The special master rejected molecular mimicry as a theory to explain how multiple
vaccines might cause anti-NMDAR encephalitis. This conclusion is consistent
with the result reached here in Ms. Faulkenberry’s case.
25

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 26 of 27
D. Synopsis regarding Prong One
To meet her burden regarding Althen prong one, Ms. Faulkenberry has
presented a variety of ideas arguing that it is biologically plausible for the hepatitis
A vaccine and/or the flu vaccine to cause anti-NMDAR encephalitis. However, as
explained in section IV.A, “biologic plausibility” is not the evidentiary standard.
Under the correct evidentiary standard, Ms. Faulkenberry’s evidence fails to
measure up. There is little reliable support for claiming that the hepatitis A
vaccine and/or flu vaccine can cause anti-NMDAR encephalitis. Any such theory
would need to encompass the known etiology for the condition, which involves a
specific subunit of the receptor.
V. Comments on Remaining Althen Prongs
When petitioners fail to establish one Althen prong, additional analysis is
not required. Ms. Faulkenberry’s case is resolved solely on the basis of Althen
prong one.
A resolution on the basis of prong one obviates the need to consider some
specific questions about what happened to WCF. For example, the parties dispute
whether WCF suffered from any infection when he was sick in Target on February
21, 2016. See Pet’r’s Br. at 3 and 36 and Resp’t’s Br. at 3, 12. If preponderant
evidence established an infection, then this infection, in turn, could explain why
WCF developed anti-NMDAR encephalitis. See Resp’t’s Br. at 36-37, citing Dr.
Lancaster’s reports. Similarly, a dispute as to when WCF began to manifest
symptoms of anti-NMDAR encephalitis prevents an easy resolution of Althen
prong three. See Resp’t’s Br. at 46 (arguing that WCF’s anti-NMDAR
encephalitis was manifested before the vaccination). Any resolution of Althen
prongs two and three would be entirely academic and unnecessary to decide this
case.
VI. Conclusion
Ms. Faulkenberry merits sympathy as her child has suffered. But she has not
presented persuasive evidence that the hepatitis A vaccine and/or flu vaccine was
the cause of WCF’s anti-NMDAR encephalitis. Therefore, Ms. Faulkenberry is
not entitled to compensation.
The Clerk’s Office is instructed to enter judgment in accord with this
decision unless a motion for review is filed. Information about filing a motion for
26

Case 1:19-vv-00238-DAT Document 96 Filed 11/26/24 Page 27 of 27
review, including the deadline, can be found in the Vaccine Rules, which are
available on the website for the Court of Federal Claims.
IT IS SO ORDERED.
s/Christian J. Moran
Christian J. Moran
Special Master
27

================================================================================
DOCUMENT 2: USCOURTS-cofc-1_19-vv-00238-1
Date issued/filed: 2025-05-14
Pages: 11
Docket text: JUDGE VACCINE REPORTED OPINION (PUBLIC VERSION) re: 101 Order on Motion for Review, Judge Vaccine Order/Opinion. Signed by Judge David A. Tapp. (jjg) Service on parties made.
--------------------------------------------------------------------------------
Case 1:19-vv-00238-DAT Document 105 Filed 05/14/25 Page 1 of 11
In the United States Court of Federal Claims
No. 19-238V
Filed: May 14, 2025†
AMY FAULKENBERRY, on behalf of her
minor son, WCF,
Petitioner,
v.
THE SECRETARY OF HEALTH AND
HUMAN SERVICES,
Respondent.
Milton Clay Ragsdale, IV, Ragsdale LLC, Birmingham, AL, for Petitioner.
Madelyn E. Weeks, Trial Attorney, Alexis B. Babcock, Assistant Director, Heather L. Pearlman,
Deputy Director, C. Salvatore D’Alessio, Director, Brian M. Boynton, Principal Deputy Assistant
Attorney General, Torts Branch, Civil Division, U.S. Department of Justice, Washington, D.C.,
for Respondent.
MEMORANDUM OPINION AND ORDER
TAPP, Judge.
Petitioner, Amy Faulkenberry (“Ms. Faulkenberry”), on behalf of her minor son
(“WCF”), petitioned for compensation, alleging that WCF suffered from anti-NMDAR
encephalitis after receiving the hepatitis A vaccine and/or influenza (“flu”) vaccine.1 (Pet., ECF
† This Order was originally filed under seal on April 24, 2025. (ECF No. 101). The Court
provided parties the opportunity to review this opinion for any proprietary, confidential, or other
protected information and submit proposed redactions no later than May 8, 2025. The parties
filed a Joint Status Report indicating that they did not seek any redactions. (ECF No. 104). Thus,
the sealed and public versions of this Order are identical, except for the publication date and this
footnote.
1 The Special Master included a brief description of anti-NMDAR encephalitis. See
Faulkenberry on behalf of WCF v. Sec’y of Health & Hum. Servs., No. 19-238V, 2024 WL
4892507, at *2 (Fed. Cl. Spec. Mstr. Nov. 1, 2024); (Decision, ECF No. 95). For approximately
70% of patients, initial symptoms include headache, fever, nausea, vomiting, diarrhea, and some
psychiatric symptoms. See id. (citing Josep Dalmau et al., Clinical experience and laboratory
investigations in patients with anti-NMDAR encephalitis, 10 LANCET NEUROL. 63 (2011); filed
as Spec. Mstr. Ex. A-2.). For children, initial symptoms include seizures and status epilepticus,

Case 1:19-vv-00238-DAT Document 105 Filed 05/14/25 Page 2 of 11
No. 1). The Special Master concluded that Ms. Faulkenberry “failed to show how either a
hepatitis A vaccine or a flu vaccine can cause anti-NMDAR encephalitis.” Faulkenberry on
behalf of WCF v. Sec’y of Health & Hum. Servs., No. 19-238V, 2024 WL 4892507, at *1 (Fed.
Cl. Spec. Mstr. Nov. 1, 2024); (Decision, ECF No. 95). The Special Master denied compensation
because Ms. Faulkenberry failed to present a medical theory supporting causation between the
vaccine and anti-NMDAR encephalitis. See id at *6.
Ms. Faulkenberry seeks review, (ECF No. 97), arguing the Special Master used incorrect
legal standards when analyzing evidence of general causation and assessing her medical theory.
(Mem. Mot. for Rev. (“Pet’r’s Mem.”), ECF No. 97-1). The Court DENIES Ms. Faulkenberry’s
Motion for Review and AFFIRMS the Special Master’s decision.
I. Background
WCF’s diagnosis was preceded by multiple episodes of respiratory syncytial virus
(“RSV”), bronchiolitis, and an upper respiratory infection (“URI”). Faulkenberry, 2024 WL
4892507 at *1 (citing Pet’r’s Ex. 4 at 3–6, ECF No. 9). At his eighteen-month checkup, WCF’s
physician administered the hepatitis A and flu vaccines. Id. WCF’s respiratory difficulties
continued with new symptoms manifesting. See id. Following receipt of the vaccines, doctors
again treated WCF for URI, vomiting, and on a separate occasion, convulsions. Id. at *1–2. In
the following weeks, multiple pediatricians and neurologists examined WCF, and he tested
positive for NMDA antibodies. Id. at *2.
Ms. Faulkenberry petitioned for vaccine compensation on February 12, 2019. (See
generally Pet.). Using a preponderance of the evidence standard, the Special Master found Ms.
Faulkenberry had failed to present persuasive evidence that the hepatitis A vaccine and/or flu
vaccine could cause anti-NMDAR encephalitis. See generally Faulkenberry, 2024 WL 4892507.
The Special Master’s findings chiefly relied on a review of scientific literature and testimony
from admitted experts Dr. Lydia Marcus (“Dr. Marcus”),2 retained by Ms. Faulkenberry, and Dr.
Eric Lancaster (“Dr. Lancaster”),3 retained by the Secretary of Health and Human Services (“the
Secretary”). See id. at *3 (citing Ex. 23, ECF No. 40; Ex. B, ECF No. 46).
Both parties’ experts agree that WCF’s diagnosis is anti-NMDAR encephalitis; however,
they differ on whether WCF’s diagnosis should be attributed to the vaccine. See generally
Faulkenberry, 2024 WL 4892507 at *3–5. The experts primarily disagreed on three aspects of
which is followed by “decreased responsiveness, alternating between agitation and catatonia, and
marked by abnormal movements and autonomic instability.” Id. The Special Master noted that
approximately 75% of patients recover or experience mild complications; however, some will be
hospitalized for several months and need physical and behavioral rehabilitation. See id.
2 Dr. Marcus is a board-certified pediatric neurologist and author of a pending article on anti-
NMDAR encephalitis. See Faulkenberry, 2024 WL 4892507, at *3 (citing Ex. 22, ECF No. 40).
3 Dr. Lancaster is a board-certified neurologist with “expertise in antibody-mediated neurologic
disorders” and has treated adult patients with anti-NMDAR encephalitis. See Faulkenberry on
behalf of WCF, 2024 WL 4892507, at *3 (citing Ex. A, B, ECF No. 46).
2

Case 1:19-vv-00238-DAT Document 105 Filed 05/14/25 Page 3 of 11
this case: (1) whether there is a theory by which vaccines can cause anti-NMDAR encephalitis;
(2) when WCF first manifested symptoms of his anti-NMDAR encephalitis; and (3) whether an
infection, and not the vaccines, could have caused the anti-NMDAR encephalitis. Id.
In support of Ms. Faulkenberry’s argument, Dr. Marcus recited several medical theories
explaining how anti-NMDAR encephalitis can be induced; however, she appeared to focus on
molecular mimicry4 as a “plausible mechanism[.]” Faulkenberry, 2024 WL 4892507 at *3
(citing Pet’r’s Ex. 22 at 3). Dr. Lancaster disputed this theory, arguing that the “key phenomenon
which absolutely must occur for anti-NMDAR encephalitis to develop is the creation of specific
antibodies that target a specific 3-dimensional epitope on the GluN1 receptor subunit[.]” Id.
Additionally, Dr. Lancaster concluded it was highly improbable “that a denatured vaccine
protein” would strongly resemble this structure.5 Id. (citing Resp’t Ex. A at 4, ECF No. 46). Dr.
Lancaster also noted that Dr. Marcus failed to specify which vaccine would carry the NMDAR
mimic or which protein was the mimic. See id. (citing Resp’t Ex. A at 5). To this, Dr. Marcus
countered that only a “plausible biologic theory” was required rather than an exact mechanism or
evidence of a causal link. Id. (citing Pet’r’s Ex. 54 at 3).
Dr. Lancaster also discussed WCF’s medical history to show viable alternative causes for
his anti-NMDAR encephalitis. See Faulkenberry, 2024 WL 4892507 at *4. (citing Resp’t Ex. A
at 5). WCF had a history of periodic upper respiratory infections and otitis media throughout
early childhood; he would later present symptoms associated with acute gastrointestinal infection
and was later diagnosed with maxillary sinusitis “when he presented with the first definite
symptoms of anti-NMDAR encephalitis.” See id. Dr. Lancaster noted that these were active
infections preceding the onset of encephalitis, and any one of these causes could have led to
WCF’s anti-NMDAR. See id. Thus, Dr. Lancaster determined it to be more likely that infection
was the cause of WCF’s anti-NMDAR encephalitis as opposed to the receipt of vaccinations. Id.
Dr. Marcus disagreed with Dr. Lancaster’s opinion. Id. (arguing that even if the infection theory
was accepted, the vaccinations received must be considered a “necessary and substantial
cause.”).
Under the National Childhood Vaccine Injury Act of 1986 (“the Vaccine Act”),
petitioners must either establish: (1) an injury listed on the Vaccine Injury Table occurred within
the requisite period, or (2) an unlisted injury was caused-in-fact by a vaccine listed on the Table.
See 42 C.F.R. § 100.3; 42 U.S.C. § 300aa-11(c)(1)(C). Here, Ms. Faulkenberry petitioned for an
4 The molecular mimicry theory begins when a person’s immune system attempts to neutralize a
foreign antigen (a vaccine). Tullio v. Sec'y of Health & Hum. Servs., No. 15-51V, 2019 WL
7580149, at *12–14 (Fed. Cl. Spec. Mstr. Dec. 19, 2019). In autoimmune diseases, the immune
response goes awry attacking not only the foreign antigen but also the body’s own tissues. Id. at
12. Molecular mimicry posits this malfunction occurs when the “structure of the foreign invader
resembles (or mimics) the structure of cells in the body[,]” confusing the immune system, which
in turn attacks the host. Id. (“[A] process sometimes known as “breaking tolerance.”).
5 Denatured means to modify the molecular structure of something such as a protein or DNA.
Denatured, Merriam-Webster’s Dictionary, https://www.merriam-
webster.com/dictionary/denatured (last visited Apr. 19, 2025).
3

Case 1:19-vv-00238-DAT Document 105 Filed 05/14/25 Page 4 of 11
unlisted injury; thus, she was required to establish causation. To demonstrate actual causation,
Ms. Faulkenberry was required to show by preponderant evidence: “(1) a medical theory
connecting the vaccination and injury; (2) a logical sequence of cause and effect showing that the
vaccination was the reason for the injury; and (3) a showing of proximate temporal relationship
between vaccination and injury.” Althen v. Sec’y of Health & Hum. Servs., 418 F. 3d 1274, 1278
(Fed. Cir. 2005) (the Althen test).
The Special Master explained that to prevail, Ms. Faulkenberry must establish her case
by a preponderance of the evidence for each Althen prong. Faulkenberry, 2024 WL 4892507, at
*6 (citing Althen, 418 F.3d at 1278). He also emphasized the importance of distinguishing
between “preponderant evidence” and “medical certainty,” stating that while preponderant
evidence is required, proof of medical certainty is not. Id. In accordance with this standard, the
Special Master rejected Ms. Faulkenberry’s broad argument that she must merely establish a
plausible medical theory of causal connection. See id. at *7. Despite finding that Ms.
Faulkenberry improperly argued that a plausible theory was sufficient, the Special Master went
on to evaluate the evidence she provided to see if it met the preponderance standard. See id. 8–
14.
The Special Master found that the epidemiologic evidence relied upon by Ms.
Faulkenberry was not persuasive. See Faulkenberry, 2024 WL 4892507, at *8 (noting that
Plaintiff’s expert relied on an abstract6 more than three years old and not cited by any special
master). He also required full versions of medical articles rather than abstracts. Id. (holding
abstracts lack the benefit of peer reviews or scrutiny from the scientific community). Further
still, the Special Master identified the limited information in the abstract Dr. Marcus used as a
“methodological flaw.” Id. (finding the abstract relied on the Vaccine Adverse Event Reporting
System (“VAERS”) database, which is not a reliable source) (citing Hazlehurst v. Sec’y of
Health & Hum. Servs., 88 Fed. Cl. 473, 488 (2009), aff’d, 604 F.3d 1343 (Fed. Cir. 2010);
Hennessey v. Sec’y of Health & Hum. Servs., No. 01-190V, 2009 WL 1709053, at *33 (Fed. Cl.
Spec. Mstr. May 29, 2009)).
Moreover, the Special Master also found the four case reports Dr. Marcus submitted to be
unsubstantiated. Faulkenberry, 2024 WL 4892507, at *8. “In general, case reports provide little,
if any, information helpful to determining causation because they present only a temporal
sequence of events in which the vaccination preceded an adverse health event.” Id. at *9 (citing
K.O. v. Sec’y of Health & Hum. Servs., No. 13-472V, 2016 WL 7634491, at *11–12 (Fed. Cl.
Spec. Mstr. July 7, 2016)). Apart from this, he determined that the case reports also lacked merit.
See id. Among those case reports, one was an abstract,7 two discussed vaccines other than the
6 Nour Jedidi, et al., Encephalitis after Influenza Vaccination in the United States: A CDC/FDA
Vaccine Adverse Event Reporting System Study, 1990–2018 (3052). 19 NEUROLOGY, supplement
15 (2021); (Ex. 50, ECF No. 70).
7 Teodora Cartisano and Jennifer Kicker, Anti-N-methyl-D-Aspartate Receptor Encephalitis in 7-
Month Old Infant Following Influenza Vaccination (P5.136), 86 NEUROLOGY, supplement 16
(2016); (Ex. 51, ECF No. 70).
4

Case 1:19-vv-00238-DAT Document 105 Filed 05/14/25 Page 5 of 11
hepatitis A and flu vaccines,8 and the fourth discussed a disease other than anti-NMDAR
encephalitis.9 See id. Thus, the Special Master concluded that the expert’s extrapolations from
these case reports were unpersuasive. See id.
As for disclosing medical theories, the Special Master noted the lack of explanation
linking either vaccine received by WCF to anti-NMDAR encephalitis. See Faulkenberry, 2024
WL 4892507, at *9. The Special Master criticized Dr. Marcus and Ms. Faulkenberry for listing
multiple mechanisms and/or theories but failing to meaningfully engage with the theories. Id. at
*10. Since both Ms. Faulkenberry and Dr. Marcus primarily focused on molecular mimicry, the
Special Master centered his analysis on case law analyzing this medical theory. See id. at *10–
11. The Special Master found that Dr. Marcus did not “persuasively establish the reliability of
the molecular mimicry theory in the context of anti-NMDAR encephalitis.” Id. at *12. The
Special Master determined that Dr. Marcus’s opinion included many generalities, lacked
explanations for the methodology or results of cited studies, and mentioned no hypothesis of how
the vaccines could lead to the “creation of antibodies to the specific protein that causes anti-
NMDAR encephalitis.” Id. at *12–14. Accordingly, the Special Master determined that Ms.
Faulkenberry failed to meet prong one of the Althen test. See id. at *15.
II. Analysis
Ms. Faulkenberry asks the Court find that the Special Master applied the incorrect
standard to analyze whether the vaccine caused WCF’s injuries. (See generally Pet’r’s Mem.).
When reviewing a special master’s decision, the Court must determine if the decision is
“arbitrary, capricious, an abuse of discretion, or otherwise not in accordance with law[.]” 42
U.S.C. § 300aa-12(e)(2)(B). Accordingly, the Court applies this arbitrary and capricious standard
to factual findings and de novo to legal conclusions. See Munn v. Sec’y of Health & Hum. Servs.,
970 F.2d 863, 870 (Fed. Cir. 1992).
With a mixed question of law and fact, “the standard of review . . . depends on whether
answering it entails primarily legal or factual work.” Echols v. Sec’y of Health & Hum. Servs.,
165 Fed. Cl. 9, 16 (2023) (citations omitted). In vaccine cases, the Court does not “reweigh”
factual evidence, question whether the special master correctly evaluated the evidence, or re-
examine the probative value of the evidence. Porter v. Sec’y of Health & Hum. Servs., 663 F.3d
1242, 1249 (Fed. Cir. 2011); see also Lampe v. Sec’y of Health & Hum. Servs., 219 F.3d 1357,
1360 (Fed. Cir. 2000). Neither does the Court “examine the probative value of the evidence or
the credibility of the witnesses.” Porter, 663 F.3d at 1249.
8 Dominique Endres, Psychiatric Presentation of Anti-NMDA Receptor Encephalitis, 10 FRONT.
NEUROL. 1086 (2019); filed as Exhibit 52. Caroline Hofmann et al., Anti-NMDA receptor
encephalitis after TdaP-IPV booster vaccination: cause or coincidence?, 258 J. NEUROL. 500
(2010); (Ex. 30, ECF No. 40).
9 Isabella Van Ussel et al., Encephalitis related to a H1N1 vaccination: case report and review of
the literature, 124 CLIN. NEUROL. NEUROSURG. 8 (2014); (Ex. 36, ECF No. 41).
5

Case 1:19-vv-00238-DAT Document 105 Filed 05/14/25 Page 6 of 11
Rather, the Court upholds the special master’s decision if they “considered the relevant
evidence of record, dr[ew] plausible inferences and articulated a rational basis for the
decision[.]” Hines on behalf of Sevier v. Sec’y of Health & Hum. Servs., 940 F.2d 1518, 1528
(Fed. Cir. 1991) (holding that “reversible error [is] extremely difficult to demonstrate”). The
standard of review is “highly deferential.” Cucuras v. Sec’y of Health & Hum. Servs., 26 Cl. Ct.
537, 541 (1992), aff’d, 993 F.2d 1525 (Fed. Cir. 1993). The Court cannot “substitute its
judgment for that of the special master merely because it might have reached a different
conclusion.” Snyder v. Sec’y of Health & Hum. Servs., 88 Fed. Cl. 706, 718 (2009). So long as
the special master’s factual determination is “based on evidence in the record that is not wholly
implausible, we are compelled to uphold that finding as not being arbitrary or capricious.”
Cedillo v. Sec’y of Health & Hum. Servs., 617 F.3d 1328, 1338 (Fed. Cir. 2010).
As previously stated, special masters and this Court apply the Althen test to show actual
causation. Althen, 418 F.3d at 1278. Under this test, petitioners must show by preponderant
evidence a medical theory causally connecting the vaccination and the injury, a logical sequence
of cause and effect showing that the vaccination was the reason for the injury, and a showing of a
proximate temporal relationship between vaccination and injury. Id. The parties do not dispute
that it is the petitioner’s burden to establish its case by a preponderance. (Pet’r’s Mem. at 15;
Def.’s Resp. at 6, ECF No. 100). The preponderance standard of proof is a statutory requirement
and applies to each individual prong of the Althen test. See Olson v. Sec'y of Health & Hum.
Servs., 758 F. App'x 919, 922 (Fed. Cir. 2018) (citing Oliver v. Sec'y of Health & Hum. Servs.,
900 F.3d 1357, 1361 (Fed. Cir. 2018)); 42 U.S.C. § 300aa-13(a)(1)(A). A petitioner must satisfy
all three prongs to demonstrate causation. See Althen, 418 F.3d at 1274.
Althen prong one requires the petitioner to show “a medical theory causally connecting
the vaccination and the injury.” Althen, 418 F.3d at 1278. The Federal Circuit has interpreted
prong one of the Althen test and the Vaccine Act to find that causation must be proven by a
preponderance of the evidence. See 42 U.S.C. § 300aa-13(a)(1)(A); Boatmon v. Sec’y of Health
& Hum. Servs., 941 F.3d 1351, 1355 (Fed. Cir. 2019); LaLonde v. Sec’y of Health & Hum.
Servs., 746 F.3d 1334, 1341 (Fed. Cir. 2014). The Federal Circuit and this Court have clarified
the preponderance standard requires “the trier of fact to believe that the existence of a fact is
more probable than its nonexistence[.]” LaLonde, 746 F.3d at 1338–39. Precisely, “simply
identifying a ‘plausible’ theory of causation is insufficient for a petitioner to meet her burden of
proof.” Id. at 1341 (citing Moberly v. Sec’y of Health & Hum. Servs., 592 F.3d 1315, 1332 (Fed.
Cir. 2010).
The petitioner must provide a “reputable medical theory” that the vaccine can cause the
alleged type of injury. Althen, 418 F.3d at 1278; see also Pafford v. Sec’y of Health & Hum.
Servs., 451 F.3d 1352, 1355 (Fed. Cir. 2006) (holding the vaccination must be “a substantial
factor in causing the illness, disability, injury or condition and that the harm would not have
occurred in the absence of the vaccination.”). Ultimately, a special master must determine
whether the medical theory advanced by the petitioner and their expert is “more probable than
not[.]” Althen, 418 F.3d at 1279–80 (citing Hellebrand v. Sec’y of Health & Hum. Servs., 999
F.2d 1565, 1572–73 (Fed. Cir. 1993)).
A special master must review record evidence to assess the preponderance standard but is
at liberty to determine the weight of each piece of evidence. See generally Knudsen v. Sec’y of
6

Case 1:19-vv-00238-DAT Document 105 Filed 05/14/25 Page 7 of 11
Health & Hum. Servs., 35 F.3d 543, 549 (Fed. Cir. 1994); Hodge v. Sec’y of Health & Hum.
Servs., 164 Fed. Cl. 633, 641–42 (2023). Furthermore, when evaluating expert testimony, a
special master “may conclude that there is simply too great an analytical gap between the data
and the opinion proffered.” Cedillo, 617 F.3d at 1339 (quoting Gen. Elec. Co. v. Joiner, 522 U.S.
136, 146 (1997)); LaLonde, 746 F.3d at 1341 (affirming the special master’s findings that the
expert’s reliance on a theory that is “unsupported by literature” insufficiently proves causation).
A special master is also not obligated to accept an “expert[s] opinion testimony that is connected
to the existing data or methodology ‘only by the ipse dixit of the expert[.]’” Jarvis v. Sec'y of
Health & Human Servs., 99 Fed. Cl. 47, 61 (quoting Cedillo, 617 F.3d at 1339 (internal citations
omitted).
Here, Ms. Faulkenberry raises two main objections to the Special Master’s decision. (See
Pet’r’s Mem. at 3). First, Ms. Faulkenberry claims the Special Master heightened Petitioner’s
burden by requiring direct proof of how anti-NMDAR encephalitis is caused. (See generally id.
at 4–14). Second, Ms. Faulkenberry argues the Special Master required her to “present a
persuasive theory” which improperly elevated her burden under prong one of the Althen Test.
(See generally id. at 14–20). The Court disagrees with both of Ms. Faulkenberry’s arguments and
finds that the Special Master did not impermissibly raise the burden of proof and used the correct
standard when evaluating her medical theory.
First, Ms. Faulkenberry contends that the Special Master erred by requiring direct proof
of causation, thereby raising the burden of proof. (See Pet’r’s Mem. at 4–14). Essentially, Ms.
Faulkenberry’s disagreement pertains to the sufficiency of her evidence. Ms. Faulkenberry seems
to take issue with the outcome of the Special Master’s decision and the weighing of the evidence;
however, she couches her argument as a legal dispute by discussing the standard of proof
required for causation. (Pet’r’s Mem. at 5 (arguing she was only required to show “by a
preponderance of evidence . . . that her medical theory was biologically plausible and reliable
within the context of available medical knowledge.”)).10 She contends that in the absence of
direct proof, as exists here, circumstantial evidence may be sufficient to establish causation. (Id.
at 4). While the Court agrees with this in principle, the Court agrees with the Special Master that
the gaps in Ms. Faulkenberry’s proof do not surpass the requirement of preponderant evidence.
Ms. Faulkenberry claims the Special Master required direct proof of causation by
analyzing each piece of medical literature in isolation rather than considering them as a
10 (See Pet’r’s Mem. at 3–4 (“[i]nstead of weighing whether Petitioner’s evidence in this case
met the preponderance standard, he held Petitioner to a level of proof that may be available for
some other conditions, but is scientifically unknown for anti-NMDAR encephalitis”), 5
(“[i]nstead of weighing Petitioner’s evidence with this in mind, the Special Master found that a
‘gap in Dr. Marcus’s opinion . . . deprive[d] [it] of sufficient evidentiary weight to be reliable’”),
6 (“[i]nstead of weighing this testimony, the Special Master ignored the evidence and concluded
that this ‘gap’ should drive the outcome of the case”), 6 (“instead of weighing the evidence in
this case to determine whether it meets petitioner’s burden, the Special Master compared this
case to other cases evoking the same medical theory of molecular mimicry”), 8 (“the law is clear
that special masters must weigh a petitioner’s proof by a preponderance of the proof in that
individual case”), 12 (“[t]he law required the Special Master to weigh the available evidence for
how the vaccination could have caused [WCF’s] anti-NMDAR encephalitis”)).
7

Case 1:19-vv-00238-DAT Document 105 Filed 05/14/25 Page 8 of 11
collective to support her medical theory. (Pet’r’s Mem. at 13). This assertion is unsupported. The
Special Master reviewed and determined that Ms. Faulkenberry’s epidemiological study was
unreliable, her case reports were problematic, and that her expert struggled to present a theory
explaining how vaccinations can cause anti-NMDAR encephalitis. Faulkenberry, 2024 WL
4892507, at *8–15. From this collective assessment, the Special Master determined that Ms.
Faulkenberry had failed to meet her burden. Id. at *15. Rather than evaluate Ms. Faulkenberry’s
medical literature “by itself,” as Ms. Faulkenberry suggests, the record demonstrates that the
Special Master evaluated the entirety of her evidence.
Ms. Faulkenberry also alleges the Special Master raised the burden of proof when he
“required empirical confirmation or other direct proof that the vaccine at issue does cause the
injury alleged[.]” (Pet’r’s Mem. at 13). Specifically, Ms. Faulkenberry states the Special Master
improperly “demanded direct evidence” demonstrating how either the Hepatitis A or flu vaccines
“led to the creation of antibodies to the specific protein that causes anti-NMDAR encephalitis.”
(Id. at 13–14). Ms. Faulkenberry argues that her expert is permitted to synthesize a medical
theory by “combined references to circumstantial evidence of biologic plausibility in medical
literature.” (Id.). Dr. Marcus’s theory primarily advanced a theory of molecular mimicry.11
The Special Master explained that the Federal Circuit and this Court consistently require
a petitioner to present at least some persuasive or reliable evidence to support such a theory.
Faulkenberry, 2024 WL 4892507, at *10 (citing Tullio v. Sec’y of Health & Hum. Servs., No 15-
51V, 2019 WL 7580149, at *12–14 (Fed. Cl. Spec. Mstr. Dec. 19, 2019), mot. for review.
denied, 149 Fed. Cl. 448 (2020)). The Special Master also articulated that requiring such
evidence, when evaluating the theory of molecular mimicry, does “not elevate the petitioner’s
burden of proof.” Id. at *11 (citing Morgan v. Sec’y of Health & Hum. Servs., 148 Fed. Cl. 454,
476–77 (2020), aff’d in non-precedential opinion, 850 F. App’x 755 (Fed. Cir. 2021)).
Faulkenberry, 2024 WL 4892507, at *10. Here, the Secretary highlighted that Ms.
Faulkenberry’s molecular mimicry theory contained a “foundational deficit” in that it was
unclear whether Dr. Marcus believed that the alleged mimic resided in the flu vaccine, Hep A
vaccine, or some combination. Id. at 12 (citing Resp’t’s Br. at 24–25, ECF No 88). Further still,
the Secretary argued that Dr. Marcus utilized the generalized term “autoimmune encephalitis”
which made it unclear “whether the percentages she cites apply to WCF's specific condition of
anti-NMDAR encephalitis or other types of encephalitis.” Id. The Special Master agreed with the
Secretary’s arguments.
Dr. Marcus opined that “molecular mimicry, acting possibly in combination with other
mechanisms,” is a reliable theory amongst the medical community to explain vaccine-induced
autoimmunity. Faulkenberry, 2024 WL 4892507, at *13. However, the Special Master found
that this statement was overly generalized:
11 Dr. Marcus raised several other theories including “host infection, occult neoplasm,”
“polyclonal lymphocyte activation, epitope spreading, . . . and antigen complementarity.”
Faulkenberry, 2024 WL 4892507, at *14. Dr. Marcus failed to engage with the alternate theories
“in a meaningful way.” Id. at 10. Therefore, the Special Master determined reliance on these
alternate theories to be non-persuasive. Id. at 14 (citing Baron v. Sec'y of Health & Human
Servs., No. 14-341V, 2019 WL 2273484, at *17 (Fed. Cl. Spec. Mstr. Mar. 18, 2019)).
8

Case 1:19-vv-00238-DAT Document 105 Filed 05/14/25 Page 9 of 11
This statement conflates a very general biological fact, namely that molecular
mimicry has been proven to occur in very rare cases for specific diseases with
specific triggers, with the question of whether molecular mimicry actually
occurs for this specific disease with this specific mimic. Dr. Marcus does not
provide any reliable evidence that molecular mimicry occurs for the specific
vaccine in question to cause antiNMDAR encephalitis. It is entirely
insufficient for Dr. Marcus to just assert that molecular mimicry exists in
general, and therefore we must consider this the likely disease mechanism in
this case. If we accept Dr. Marcus's reasoning, then we would have to
conclude that any vaccination can cause every autoimmune disease simply
because molecular mimicry has been shown with other stimuli and other
diseases.
Id. (citations omitted).
Both Dr. Lancaster and Dr. Marcus agreed that the creation of auto-antibodies was an
essential event that must occur for anti-NMDAR encephalitis to develop. Faulkenberry, 2024
WL 4892507, at *13. However, the Special Master found that Dr. Marcus failed to “hypothesize
any way that the hepatitis A vaccine and/or the flu vaccine [could] lead[] to the creation of
antibodies to the specific protein that causes anti-NMDAR encephalitis.” Id. The Special Master
determined that this lack of hypothesis was fatal to the believability of Dr. Marcus’s opinion. Id.
(“This leaves a gap in Dr. Marcus's opinion regarding molecular mimicry and deprives Dr.
Marcus's opinion of sufficient evidentiary weight to be reliable.”).
Additionally, the Special Master found Dr. Marcus’s reliance on two articles to be of
little value. Faulkenberry, 2024 WL 4892507, at *13–14. One article explored potential links
between vaccines and anti-NMDAR encephalitis using analysis across six vaccines including the
H1N1 influenza vaccine. Id. at *14 (noting the article excluded the hepatitis A vaccine). The
Special Master criticized the article for failing to discuss any connection between its findings and
found its conclusion was limited. Id. Ultimately, the Special Master noted that Dr. Marcus "did
little" to explain the study’s methodology or results in support of her opinion. Id. (finding Dr.
Marcus had not proposed that the articles use of “phylogenetic analysis” could “serve as a proxy
for a showing of some homology.”). Similarly, Dr. Marcus relied upon a second article to assert
that “a study of almost 3,000 patients tested for anti-NMDAR antibodies found [a] higher
prevalence of anti-NMDAR antibodies in patients with anti-influenza A IgG.” Id. However, Dr.
Lancaster noted that this article did not study patients with anti-NMDAR encephalitis, and Dr.
Marcus failed to elaborate. Id. The Special Master found the article unhelpful. Id. (“Dr.
Lancaster’s criticism seems well-founded.”). Other than her expert’s assertions, Ms.
Faulkenberry’s theory lacked the support necessary to reach the asserted conclusions. Such a
mere theory is insufficient to meet Althen’s first prong.
Ms. Faulkenberry’s related second argument claims the Special Master employed the
incorrect evidentiary standard when evaluating the validity of her expert’s medical theory
regarding how the vaccines WCF received can cause anti-NMDAR encephalitis. (Pet’r’s Mem.
at 14). She argues the Special Master erred by “confusing petitioner’s burden of proof
(probability) with the element of causation petitioner must prove (a plausible medical theory).”
9

Case 1:19-vv-00238-DAT Document 105 Filed 05/14/25 Page 10 of 11
(Id.). Stated differently, Ms. Faulkenberry’s objects not to the specific evidentiary standard of
proof for Althen prong one, but rather to what she was required to prove and how she could
prove it. (Id. at 15 (“Petitioner carries a burden to prove causation by a preponderance of
evidence, but preponderance is not the metric the Federal Circuit has adopted to evaluate the
validity of Petitioner’s medical theory.”)). Ms. Faulkenberry argues the validity of her medical
theory can be satisfied “by setting forth a ‘biologically plausible’ theory of general causation”
and the Special Master improperly elevated her burden by requiring a “persuasive theory[.]” (Id.
at 14–15).
The Special Master properly identified that Ms. Faulkenberry was required to “do more
than demonstrate a ‘plausible’ or ‘possible’ causal link between the vaccination and the injury;
[she] must prove his case by a preponderance of the evidence.” Faulkenberry, 2024 WL
4892507, at *7 (citing W.C. v. Sec'y of Health & Hum. Servs., 704 F.3d 1352, 1356 (Fed. Cir.
2013)). After specifying that the preponderance standard applies to prong one, the Special
Master also explained that determining whether the theory met that standard requires an
evaluation of the evidence Ms. Faulkenberry supplied. Id. at *8 (“[I]t is conceivable that the
evidence surpasses the correct threshold . . . . [f]or this reason and to demonstrate that all
evidence relevant to Althen prong one has been considered, the undersigned will next evaluate
Ms. Faulkenberry's proposed theories”).
The Special Master articulated that the evidence supplied must be of a persuasive nature.
Faulkenberry, 2024 WL 4892507, at *7 (“the Court of Federal Claims [has generally] held that
the burden of proof for Althen prong one is persuasive evidence.”). This requirement is
consistent throughout the case law from the Federal Circuit. See Hodges v. Sec’y of Health &
Hum. Servs., 9 F.3d 958, 967 (“[T]he factfinder must decide the reliability, consistency, and
probative value of the scientific evidence, with the guidance of scientific opinion.”); Kirby v.
Sec’y of Health & Hum. Servs., 997 F.3d 1378, 1384 (Fed. Cir. 2021) (affirming the special
master’s standard in requiring a “reputable medical theory . . . based on a sound and reliable
medical or scientific explanation.”); Kottenstette v. Secretary of Health and Human Services, 861
F. App’x 433, 440–41 (Fed. Cir. 2021) (holding proof of causation “does not ‘require
identification and proof of specific biological mechanisms[,]” but must be supported by a sound
and reliable medical or scientific explanation) (internal citations omitted); Knudsen, 35 F.3d at
548–49; See Nunez v. Sec’y of Health & Hum. Servs., 825 F. App’x 816, 819 (Fed. Cir. 2020)
(determining whether the evidence “so persuasively” establishes the reliability of a medical
theory); Orloski v. Sec’y of Health & Hum. Servs., 839 Fed. App’x 538, 541 (Fed. Cir. 2021).
Failure to present reliable evidence will necessarily fail to meet muster.
The Court has already determined that the Special Master devoted substantial analysis to
the evidence provided by Ms. Faulkenberry in support of her case. See generally Faulkenberry,
2024 WL 4892507, at *8–15. However, for the variety of reasons previously highlighted, the
Special Master found her evidence to be deficient which is within his purview as the fact finder.
Althen, 418 F.3d at 1278 (“[a] persuasive medical theory is demonstrated by ‘proof of a logical
sequence of cause and effect showing that the vaccination was the reason for the injury[,]’ the
logical sequence being supported by ‘reputable medical or scientific explanation[.]’”); Knudsen,
35 F.3d at 548; Nunez, 825 F. App’x at 819. These deficiencies highlight the unreliability of Ms.
Faulkenberry’s evidence and undermines her medical theory.
10

Case 1:19-vv-00238-DAT Document 105 Filed 05/14/25 Page 11 of 11
Because the Special Master acted within his discretion, Ms. Faulkenberry’s arguments
fail. Porter, 663 F.3d at 1249 (“as long as a special master's finding of fact is ‘based on evidence
in the record that [is] not wholly implausible, we are compelled to uphold that finding as not
being arbitrary or capricious.’”) (internal citations omitted). The Court finds the Special Master’s
analysis is well-reasoned and thorough. Accordingly, the Special Master did not arbitrarily
evaluate the evidence or impermissibly raise Ms. Faulkenberry’s burden of proof for establishing
causation.
III. Conclusion
For the stated reasons, the Court hereby DENIES Ms. Faulkenberry’s Motion for Review,
(ECF No. 97), and AFFIRMS the Special Master’s November 1, 2024, decision. The Clerk is
directed to enter judgment accordingly.
The Court has filed this ruling under seal. The parties shall confer to determine proposed
redactions to which all parties agree. Per Vaccine Rule 18(b), no later than May 8, 2025, the parties
shall file a joint status report indicating their agreement with the proposed redactions, attaching a
copy of those pages of the Court’s ruling containing proposed redactions, with all proposed
redactions clearly indicated.
IT IS SO ORDERED.
s/ David A. Tapp
DAVID A. TAPP, Judge
11