VAERS Explorer
Back to explore

Report #2883749

Received Feb 3, 2026

Office visit
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
NY
Recovered
Recovered
Vaccinated
Jan 30, 2026
Onset
Jan 30, 2026
Days to onset
0
Hospital days
—

Vaccines (1)

TypeNameManufacturerDoseLotRoute / Site
MMRVMEASLES + MUMPS + RUBELLA + VARICELLA (PROQUAD)MERCK & CO. INC.3Z008864SC / LA

Symptoms (3)

Extra dose administeredInjection site erythemaInjection site swelling

Symptom narrative

Provider accidentally ordered ProQuad for nursing staff to give. Patient had already received their second dose of ProQuad in June 2025. Nursing staff gave this vaccine. Provider then spoke wiht guardian regarding the extra dose. Patient has a history of localized reaction after receiving this vaccine. Later that evening, there was erythema and swelling at the injection site. Guardian was giving Benadryl. Provider followed up over the weekend and ended up prescribing oral steroids BID x 5 days d/t increase in swelling and erythema. Since then there has been no worsening of sx.

Current illness

N/A

Medical history

hypertrophy of tonsil - had bilat T&A 12/29/25. Had previous reaction to this same vaccine

Other medications

Xyzal, Clonidine, Symbicort, Albuterol prn

Allergies

Strawberry extract - itching and grabbing tongue

Lab data

N/A

Prior vaccinations

4 years old, Kinrix (IM) and Proquad (SQ) on 6/30/2025