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Report #2886605

Received Feb 24, 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
Unknown
Age
Age unknown
State
VA
Recovered
Unknown
Vaccinated
Onset
Days to onset
Hospital days

Vaccines (1)

TypeNameManufacturerDoseLotRoute / Site
MMRMEASLES + MUMPS + RUBELLA (MMR II)MERCK & CO. INC.UNK

Symptoms (2)

Antibody test negativeViral titre decreased

Symptom narrative

the titers did not show any immunity; This spontaneous report was received from a medical assistant and referred to a 21-year-old patient of unknown gender. The patient's medical history, concurrent condition, past medications, concomitant medications were not reported. On an unknown date, patient was vaccinated with Measles, Mumps, and Rubella (Wistar RA 27-3) Virus Vaccine, Live (M-M-R II) for prophylaxis (strength, dose, route of administration, anatomical site, lot # and expiration date were not reported). The vaccine was reconstituted with sterile diluent (lot # and expiration date not reported). On an unknown date, it was reported that the titers did not show any immunity (Antibody test negative). No additional adverse event (AE) or product quality complaint (PQC) was reported. The Outcome of Antibody test negative was not provided. The action taken with suspect vaccine and the reconstituted sterile diluent was not applicable. The causality between Antibody test negative and suspect vaccine with the reconstituted sterile diluent was not reported. Lot # is being requested and will be submitted if received.

Other medications

DILUENT MRK

Lab data

Test Name: titers; Result Unstructured Data: did not show any immunity