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Report #2891334

Received Apr 1, 2026

A note on interpretation. VAERS reports are unverified and may be incomplete or coincidental. A report does not establish that a vaccine caused an event, and counts should not be used to calculate incidence or infer causation. Full disclaimer

Overview

Sex
Unknown
Age
Age unknown
State
Recovered
Unknown
Vaccinated
Onset
Days to onset
Hospital days

Vaccines (1)

TypeNameManufacturerDoseLotRoute / Site
CHIKCHIKUNGUNYA (VIMKUNYA)BAVARIAN NORDICUNKUnknown

Symptoms (1)

Unevaluable event

Symptom narrative

Side effect; Case reference number US-BN-2025-001966 is a spontaneous case initially received from other health professional via Bavarian Nordic (reference number: BN_2025_00368) on 12-Dec-2025 and concerns a patient of an unknown age and gender. No medical history was provided. No concomitant medications details were provided. On an unspecified date, the patient received the dose of Vimkunya vaccine along with its reconstitution part prefilled syringe (batch number: unknown), at an unknown dose, route or site of administration for unknown indication. On an unspecified date, the patient experienced side effect. At the time of initial report, it was unknown if the patient was recovered from adverse event. The reporter did not provide seriousness assessment and causality assessment was possible related reported as Vimkunya vaccine had a side effect. No further information was provided.; Reporter's Comments: This case concerned a patient of an unknown age and gender, who had experienced an adverse event, on unspecified date and time, after the first dose of Vimkunya vaccine for unknown indication. Adverse event is listed and expected. The patient's relevant medical history and concomitant medication details were not provided. The outcome was unknown. However, considering plausible temporal relationship and plausible biological mechanism the contributory role of the suspect vaccine cannot be excluded, and the reported event have been considered as possibly related to Vimkunya. This case is considered as non-serious.; Sender's Comments: This case concerned a patient of an unknown age and gender, who had experienced an adverse event, on unspecified date and time, after the first dose of Vimkunya vaccine for unknown indication. Adverse event is listed and expected. The patient's relevant medical history and concomitant medication details were not provided. The outcome was unknown. However, considering plausible temporal relationship and plausible biological mechanism the contributory role of the suspect vaccine cannot be excluded, and the reported event have been considered as possibly related to Vimkunya. This case is considered as non-serious.

Medical history

Comments: None