Report #2890983

Received Mar 27, 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: 15 yrs
State: MA
Recovered: Recovered
Vaccinated: Mar 25, 2026
Onset: Mar 25, 2026
Days to onset: 0
Hospital days: —

Vaccines (4)

Type	Name	Manufacturer	Dose	Lot	Route / Site
HEP	HEP B (RECOMBIVAX HB)	MERCK & CO. INC.	3	z004729	IM / RA
IPV	POLIO VIRUS, INACT. (IPOL)	SANOFI PASTEUR	4	y1d49p1	SC / RA
TDAP	TDAP (ADACEL)	SANOFI PASTEUR	3	3ca30c1	IM / LA
VARCEL	VARICELLA (VARIVAX)	MERCK & CO. INC.	3	y014868	IM / LA

Symptoms (1)

Extra dose administered

Symptom narrative

An additional dose of Varicella (VARIVAX) was administered at 4:20 PM on March 25, 2026. . This resulted in the administration of a third dose of the vaccine. Involved Product: VARIVAX (Varicella Virus Vaccine Live), 0.5 mL vial, manufactured by Merck and Co. Dose/Strength: 0.5 mL (standard dose). Error Type: Administration of an extra dose (overdose/excess dose). The patient was still in the examination room, allowing for immediate notification of the parent. The patient's health care provider, MD, has been notified. Patient was observed for 30 minutes in the office. No adverse reaction was noted.

Current illness

none

Medical history

none

Other medications

none

Allergies

none

Lab data

None.