Report #2878089

Received Dec 16, 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: 30 yrs
State: MA
Recovered: Recovered
Vaccinated: Dec 13, 2025
Onset: Dec 13, 2025
Days to onset: 0
Hospital days: —

Vaccines (1)

Type	Name	Manufacturer	Dose	Lot	Route / Site
COVID19	COVID19 (COVID19 (MODERNA MNEXSPIKE))	MODERNA	UNK	—	IM

Symptoms (2)

FatigueSomnolence

Symptom narrative

drowsiness; fatigue; This spontaneous case was reported by a consumer and describes the occurrence of SOMNOLENCE (drowsiness) and FATIGUE (fatigue) in a 30-year-old male patient who received mRNA-1283 (MNEXSPIKE PFS) for COVID-19 prophylaxis. Co-suspect product included Pre-filled Syringe injection for COVID-19 prophylaxis. No Medical History information was reported. On 13-Dec-2025, the patient received dose of mRNA-1283 (MNEXSPIKE PFS) (Intramuscular use) 1 dosage form. On an unknown date, the patient started Pre-filled Syringe (unknown route) at an unspecified dose. On 13-Dec-2025, the patient experienced SOMNOLENCE (drowsiness) and FATIGUE (fatigue). On 14-Dec-2025, SOMNOLENCE (drowsiness) and FATIGUE (fatigue) had resolved. The action taken with mRNA-1283 (MNEXSPIKE PFS) (Intramuscular use) was unknown. Concomitant medication was not reported. It was reported that the events fatigue and drowsiness resolved within one day. It was unknown if the patient experienced any additional symptoms/events. Treatment medication was not reported.