John A. Kowalczyk v. HHS - Influenza, Guillain-Barre syndrome (2025)

On September 23, 2024, John A. Kowalczyk filed a petition alleging that an influenza vaccine administered on October 2, 2023 caused Guillain-Barre syndrome.

Respondent conceded entitlement in a Rule 4(c) report, agreeing that Mr. Kowalczyk met the Vaccine Injury Table requirements for GBS following seasonal influenza vaccination.

The public ruling does not describe the first neurologic symptoms, diagnostic testing, hospitalization, IVIG or plasma exchange, rehabilitation, or residual limitations. Chief Special Master Brian H.

Corcoran found entitlement on October 28, 2025. Damages remained to be determined.