VAERS Explorer
Back to explore

Report #2843255

Received May 30, 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
Unknown
Age
5 yrs
State
MO
Recovered
Unknown
Vaccinated
May 13, 2025
Onset
May 13, 2025
Days to onset
0
Hospital days
—

Vaccines (1)

TypeNameManufacturerDoseLotRoute / Site
MMRVMEASLES + MUMPS + RUBELLA + VARICELLA (PROQUAD)MERCK & CO. INC.UNK—OT

Symptoms (2)

Circumstance or information capable of leading to medication errorUnderdose

Symptom narrative

no adverse event; HCP called and reported a patient who did not receive a full dose of PROQUAD on 13MAY2025 due to moving their arm during administration. Limited demographics provided. No additional information was known by reporter. No additional AE/PQC.; This spontaneous report was received from a nurse and refers to a 5-year-old patient of unknown gender. The patient's medical history was not reported. The patient's concurrent conditions were not reported. Concomitant therapies were not reported. On 13-May-2025, the patient was vaccinated with Measles, Mumps, Rubella and Varicella (Oka-Merck) Virus Vaccine Live (PROQUAD) (dose, frequency, route of administration, lot # and expiration date were not reported) as a prophylaxis. The vaccine was reconstituted with sterile diluent (MERCK STERILE DILUENT) (lot# and expiration date were not provided). On 13-May-2025, the patient started therapy with sterile diluent (MERCK STERILE DILUENT) (lot # and expiration date were not reported). However, the patient did not receive a full dose of due to moving their arm during administration (accidental underdose). No additional information was known by reporter.

Other medications

Sterile diluent