Received Oct 9, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| COVID19 | COVID19 (COVID19 (MODERNA MNEXSPIKE)) | MODERNA | UNK | — | — |
seizure syndrome/had a seizure; ill; This spontaneous case was reported by a consumer and describes the occurrence of SEIZURE (seizure syndrome/had a seizure) in a patient of an unknown age and gender who received mRNA-1273.251 (Spikevax LP.8.1 PFS) for COVID-19 prophylaxis. The occurrence of additional non-serious events is detailed below. No Medical History information was reported. On 03-Oct-2025, the patient received dose of mRNA-1273.251 (Spikevax LP.8.1 PFS) (unknown route) 1 dosage form. On 05-Oct-2025, the patient experienced SEIZURE (seizure syndrome/had a seizure) (seriousness criterion medically significant) and ILLNESS (ill). At the time of the report, SEIZURE (seizure syndrome/had a seizure) and ILLNESS (ill) outcome was unknown. No concomitant medications were reported. On 06-Oct-2025, it was reported that the patient had Moderna vaccination three days ago. Post vaccination, patient was ill for two days afterwards. It was reported that the patient had a seizure at the end of day two, post vaccination. The patient had no idea about the seizure, and the patient was not sure exactly how it evolved. All the past Covid vaccines received by the patient were mRNA vaccines, and the patient had no trouble after receiving them. It was interpreted that perhaps the problem was that patient was now diagnosed with seizure syndrome or perhaps the patient's body did not like the vaccine. No treatment medications were reported.; Reporter's Comments: The benefit -risk relationship of product is not affected by this report.