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Report #2877418

Received Dec 11, 2025

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
CO
Recovered
Unknown
Vaccinated
—
Onset
—
Days to onset
—
Hospital days
—

Vaccines (1)

TypeNameManufacturerDoseLotRoute / Site
CHIKCHIKUNGUNYA (VIMKUNYA)BAVARIAN NORDIC2Unknown—

Symptoms (2)

Extra dose administeredNo adverse event

Symptom narrative

Patient accidently administered 2 doses of Vimkunya instead of one dose; Case reference number US-BN-2025-001753 is a spontaneous case report initially received from other health care professional via Bavarian Nordic (reference number: CASE-000553) on 31-Oct-2025 and concerns a patient of an unknown age and gender. No medical history was provided. No concomitant medications details were provided. On unspecified date, reported as today, patient received five vaccines with unknown trade name/manufacturer. Patient was vaccinated with the first dose of the Vimkunya vaccine, along with its constituent part prefilled syringe, at unknown dose (batch number: unknown), route of administration for an unknown indication. Patient accidently administered second dose of Vimkunya vaccine, along with its constituent part prefilled syringe, at unknown dose (batch number: unknown), route of administration. (explicitly coded as 'accidental overdose') At the time of initial report, it was unknown if the patient experienced any adverse event due to Vimkunya vaccine. No further information was provided.; Reporter's Comments: A spontaneous case concerning, patient of unknown age and gender received five vaccines, including the first dose of Vimkunya vaccine. On the same day, the patient was accidentally administered a second dose of Vimkunya (coded as accidental overdose). No adverse events were reported at the time of initial notification. The event accidental overdose is listed as per company convention. The event accidental overdose assessed as not related as per company convention. The case is non serious.; Sender's Comments: A spontaneous case concerning, patient of unknown age and gender received five vaccines, including the first dose of Vimkunya vaccine. On the same day, the patient was accidentally administered a second dose of Vimkunya (coded as accidental overdose). No adverse events were reported at the time of initial notification. The event accidental overdose is listed as per company convention. The event accidental overdose assessed as not related as per company convention. The case is non serious.

Medical history

Comments: None.