Received Mar 23, 2026
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| FLUN3 | INFLUENZA (SEASONAL) (FLUMIST) | MEDIMMUNE VACCINES, INC. | UNK | YH3387 | IN / NS |
Severe inflammation in joints for 4 months to date.; A spontaneous report has been received from a consumer. The report concerns a male adult patient of ethnic origin born (age 49 years, height 170 cm, weight 53.07 kg). No medical history was reported. No concomitant products were reported. The patient received Flumist (batch number(s) YH3387) (expiration date(s) 08-DEC-2025), via nasal use for flu vaccination on 09-NOV-2025. The patient received 1 dose(s). On 11-NOV-2025, the patient experienced severe inflammation in joints for 4 months to date. (preferred term: Arthritis). Suspect vaccine Flumist action taken was not applicable. At the time of reporting, the event severe inflammation in joints for 4 months to date. was ongoing. The event was considered serious (Disability). Device Information: Combination Product Report: Yes Product As Reported: Flumist Brand Name: FLUMIST Product Role:Suspect Device Problem code:A24 - Adverse Event Without Identified Device or Use Problem Manufacturer Name:ASTRAZENECA Labeled for single use:No; Sender's Comments: Arthritis is not a listed event in the Core Data Sheet for Flumist, Influenzae virus vaccine, Q/LAIV. The event Arthritis has been reported in a patient using Accuspray Single Dose. Due to limited information on past medical history, underlying pathophysiology, clinical course, circumstances which led to event, detailed diagnostic, clinical work up, concomitant medication and comorbidities the evaluation did not find evidence to suggest a causal relationship between Arthritis and Flumist, Influenzae virus vaccine, Q/LAIV and Accuspray Single Dose.
Flu vaccination