William Mayfield v. HHS - Pneumococcal, Shoulder Injury Related to Vaccine Administration (SIRVA) (2025)

On April 22, 2024, William Mayfield filed a petition alleging that a pneumococcal conjugate vaccine administered on April 7, 2023 caused a shoulder injury related to vaccine administration. The public stipulation identifies him as an adult but does not state an exact age.

Respondent denied that the alleged SIRVA or its residual effects were caused by the pneumococcal conjugate vaccine and denied that the vaccine caused any other injury or current condition. The public decision does not describe symptom onset, treatment, imaging, injections, physical therapy, or expert opinions.

On December 5, 2025, Chief Special Master Corcoran adopted the parties' stipulation and awarded $101,656.75 as a lump sum through counsel for all damages available under the Vaccine Act.