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Report #2865333

Received Oct 13, 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
1 yrs
State
GA
Recovered
Unknown
Vaccinated
Oct 10, 2025
Onset
Oct 10, 2025
Days to onset
0
Hospital days
—

Vaccines (1)

TypeNameManufacturerDoseLotRoute / Site
VARCELVARICELLA (VARIVAX)MERCK & CO. INC.2Z008197SC / LL

Symptoms (2)

Extra dose administeredWrong product administered

Symptom narrative

Patient was intended to receive the Measles, Mumps, and Rubella (MMR) vaccine and a separate Varicella vaccine, in addition to the Hepatitis A vaccine, which he received correctly. However, our medical assistant mistakenly administered the MMRV vaccine, which combines MMR and Varicella, along with a separate Varicella vaccine. After finding out about the error, our clinical supervisor consulted the CDC for guidance. The primary concern is the administration of the MMRV vaccine at 12 months of age due to a slightly increased risk of febrile seizures compared to separate MMR and Varicella vaccines given at this age. This may occur up to 10-14 days after administration. The Academy of Pediatrics (AP) typically recommends delaying the combined MMRV until 4-5 years of age to mitigate this risk. There is no significant concern regarding the administration of two Varicella vaccines, as this does not increase reactogenicity or cause additional problems. The patient's mother, a nurse, expressed understanding and appreciation for the transparency, and stated she would monitor Patient's for fevers. I advised to use Ibuprofen and give it for temperatures above 100.4 rectal and inform us.

Current illness

10/03/2025: Vomiting

Medical history

GERD, Failure to thrive, Sacral Dimple, Laryngomalacia, and Chronic OM

Other medications

None

Allergies

NKDA

Lab data

None