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Report #2866448

Received Oct 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
Female
Age
82 yrs
State
—
Recovered
Recovered
Vaccinated
Oct 6, 2025
Onset
Oct 7, 2025
Days to onset
1
Hospital days
—

Vaccines (1)

TypeNameManufacturerDoseLotRoute / Site
COVID19COVID19 (COVID19 (MODERNA MNEXSPIKE))MODERNAUNK—IM

Symptoms (2)

ChillsHypersomnia

Symptom narrative

slept most of the day; chill; This spontaneous case was reported by a consumer and describes the occurrence of HYPERSOMNIA (slept most of the day) and CHILLS (chill) in an 82-year-old female patient who received mRNA-1273.251 (Spikevax LP.8.1 PFS) for COVID-19 prophylaxis. Concomitant products included Influenza vaccine from 28-Sep-2025 to 28-Sep-2025 for an unknown indication. On 06-Oct-2025, the patient received dose of mRNA-1273.251 (Spikevax LP.8.1 PFS) (Intramuscular use) 1 dosage form. On 07-Oct-2025, the patient experienced HYPERSOMNIA (slept most of the day) and CHILLS (chill). On 08-Oct-2025, HYPERSOMNIA (slept most of the day) and CHILLS (chill) had resolved. The patient received the flu vaccine 8 days before the covid 19 vaccination and indicated no significant medical history. On 06-Oct-2025, the patient received the Moderna COVID-19 vaccination. On 07-Oct-2025, she experienced violent chills for the entire day and slept most of the day. This was the first time it had happened. The symptoms were gone the next day, on 08-Oct-2025. It was unknown if the patient experienced any additional symptoms or events. The treatment medication was not reported by the reporter.

Other medications

Influenza vaccine