Report #2858176

Received Sep 11, 2025

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: 17 yrs
State: MO
Recovered: Recovered
Vaccinated: Sep 4, 2025
Onset: Sep 4, 2025
Days to onset: 0
Hospital days: —

Vaccines (1)

Type	Name	Manufacturer	Dose	Lot	Route / Site
MNQ	MENINGOCOCCAL CONJUGATE (MENQUADFI)	SANOFI PASTEUR	2	U8574AA	IM / RA

Symptoms (4)

HypotoniaImmediate post-injection reactionLoss of consciousnessSeizure

Symptom narrative

THIS PATIENT HAD A MILD SEIZURE WITH LOSS OF CONSCIOUSNESS FOR APPROXIMATELY 5 SECONDS. HE SLUMPED TO THE FLOOR SLOWLY, ALMOST IMMEDIATELY AFTER THE VACCINE WAS ADMINISTERED TO HIS RIGHT DELTOID MUSCLE.

Current illness

NONE ACCORDING TO SCREENING QUESTIONAIRE FOR IMMUNIZATIONS THAT PARENT SIGNED

Medical history

SAME ANSWER AS ABOVE

Other medications

UNKNOWN

Allergies

NONE ACCORDING TO FATHER

Lab data

NONE REPORTED