Received Nov 4, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| COVID19 | COVID19 (COVID19 (MODERNA)) | MODERNA | UNK | — | IM |
bad chills; This spontaneous case was reported by a consumer and describes the occurrence of CHILLS (bad chills) in an elderly male patient who received mRNA-1273.815 (SPIKEVAX 2023-2024) for COVID-19 prophylaxis. Previously administered products included for COVID-19 prophylaxis: Spikevax NOS (Patient have always chosen the Moderna Covid-19 vaccine in the past and she never having had any side effects.). Past adverse reactions to the above products included No adverse effect with Spikevax NOS. In April 2024, the patient received dose of mRNA-1273.815 (SPIKEVAX 2023-2024) (Intramuscular use) 1 dosage form. On an unknown date, the patient experienced CHILLS (bad chills). At the time of the report, CHILLS (bad chills) had resolved. Relevant Medical History (vaccines within the past 4 weeks, medical conditions) were reported as unknown. Patient have always chosen the Moderna Covid-19 vaccine in the past, he never had any side effects. No concomitant medication was reported. Patient had bad chills once after taking Spikevax in Apr-2024 (no other side effects and this was not an issue to them, they stated). Patient was senior with no health conditions and would then like to know which vaccine would be better for the patient. It was unknown if the patient experienced any additional symptoms/events. No treatment medication was reported. Reporter causality was not reported.