Katherine Norwalt v. HHS - Influenza, shoulder injury related to vaccine administration (SIRVA) (2026)

On March 4, 2025, Katherine Norwalt filed a petition, later amended on April 15, 2025, alleging that an influenza vaccination on October 13, 2023 caused a shoulder injury related to vaccine administration. She alleged residual effects lasting more than six months and no prior civil recovery.

Respondent conceded entitlement in a Rule 4(c) report filed on October 2, 2025. Respondent agreed that her claim was consistent with SIRVA as defined by the Vaccine Injury Table: she had no prior affected-shoulder condition that explained the post-vaccination findings, pain began within 48 hours, pain and reduced range of motion were limited to the vaccinated shoulder, and no other condition explained the symptoms.

Chief Special Master Brian H. Corcoran granted entitlement on October 2, 2025.

The public ruling does not provide a detailed treatment narrative or damages evidence, and compensation remains to be determined. Update: a decision awarding damages filed 2026-02-24 resolved the case for $76,351.