Report #2885316

Received Feb 12, 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: Male
Age: 4 yrs
State: TN
Recovered: Unknown
Vaccinated: Feb 12, 2026
Onset: Feb 12, 2026
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	Z006280	SC / LL

Symptoms (1)

Product substitution error

Symptom narrative

Mistakenly gave patient Proquad from VFC vaccine supply instead of Private vaccine supply. Patient should have gotten private according to insurance. Pt had no adverse reaction.

Current illness

none

Medical history

speech delay

Other medications

none

Allergies

none

Lab data

n/a