Report #2849279

Received Jul 10, 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: Male
Age: 5 yrs
State: NH
Recovered: Recovered
Vaccinated: Feb 4, 2025
Onset: Feb 4, 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.	2	DILUENT ONLY 19	IM / LL

Symptoms (2)

No adverse eventProduct preparation issue

Symptom narrative

MEDICAL ASSISTANT ADMINISTERED ONLY THE DILUENT AND NOT THE ANTIGEN ON 2/4/2025. THIS WAS DISCOVERED RECENTLY, WHEN A SIMILIAR OCCURANCE WAS CAUGHT PRIOR TO ADMINISTRATION INVOLVING ANOTHER PATIENT. UPON FURTHER REVIEW, THE MEDICAL ASSISTANT INDICATED NOT BEING AWARE THE MMRV WAS IN THE FREEZER OR THAT IT NEEDED TO BE DILUTED. THIS PROMPTED THE NURSE TO INVESTIGATE ALL PRIOR MMRV ADMINISTRATIONS AND DISCOVERED THE 2/4/2025 VACCINE ERROR. THE PATIENT HAD NO ADVERSE EFFECTS, THE PROVIDER WAS NOTIFIED, NHIP HAS BEEN NOTIFIED AND IT IS RECOMMENDED THE PATIENT RECEIVE A REPEAT MMRV. PATIENT IS SCHEDULED ON 7/23/2025 FOR REPEAT MMRV.

Current illness

N/A

Medical history

N/A

Other medications

N/A

Allergies

N/A

Lab data

N/A