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
Female
Age
1 yrs
State
CT
Recovered
Recovered
Vaccinated
Dec 29, 2025
Onset
Dec 29, 2025
Days to onset
0
Hospital days
—
Vaccines (1)
Type
Name
Manufacturer
Dose
Lot
Route / Site
MMRV
MEASLES + MUMPS + RUBELLA + VARICELLA (PROQUAD)
MERCK & CO. INC.
1
z011829
SYR / LL
Symptoms (1)
Wrong product administered
Symptom narrative
MMRV Vaccine administered as opposed to MMR. No signs or symptoms of adverse reaction