Report #2843684

Received Jun 3, 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: TX
Recovered: Unknown
Vaccinated: Jun 2, 2025
Onset: Jun 2, 2025
Days to onset: 0
Hospital days: —

Vaccines (2)

Type	Name	Manufacturer	Dose	Lot	Route / Site
MMRV	MEASLES + MUMPS + RUBELLA + VARICELLA (PROQUAD)	MERCK & CO. INC.	UNK	—	—
MMRV	MEASLES + MUMPS + RUBELLA + VARICELLA (PROQUAD)	MERCK & CO. INC.	UNK	—	—

Symptoms (1)

Wrong product administered

Symptom narrative

Caller stated patient has not reported any symptoms.; HCP calling to report a patient inadvertently received and PROQUAD vaccine instead of MMRII and VARIVAX.; This spontaneous report was received from a nurse regarding a patient of unknown age and gender. The patient's medical history, concurrent conditions, and concomitant therapies were not reported. On 02-JUN-2025, the patient was inadvertently vaccinated with Measles, Mumps, Rubella and Varicella (Oka-Merck) Virus Vaccine Live (PROQUAD), administered as prophylaxis (strength, dose, vaccination scheme, route of administration, anatomical site of injection, lot number, and expiration date were not reported) and reconstituted with sterile diluent (BAXTER STERILE DILUENT) (lot number and expiration date were not reported), instead of Measles, Mumps, and Rubella (Wistar RA 27-3) Virus Vaccine Live (M-M-R II) and Varicella Virus Vaccine Live (Oka-Merck) (VARIVAX) (Wrong product administered). The patient had not reported any symptoms after the administration.