Received Feb 2, 2026
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| COVID19 | COVID19 (COVID19 (MODERNA)) | MODERNA | UNK | — | — |
blood clots in both groins; pain; swelling in both legs all the way up to her stomach; This spontaneous case was reported by a consumer and describes the occurrence of THROMBOSIS (blood clots in both groins) in an 88-year-old female patient who received SPIKEVAX NOS (SPIKEVAX NOS) for COVID-19 prophylaxis. The occurrence of additional non-serious events is detailed below. No Medical History information was reported. In 2025, the patient received dose of SPIKEVAX NOS (SPIKEVAX NOS) (unknown route) 1 dosage form. In 2025, the patient experienced THROMBOSIS (blood clots in both groins) (seriousness criterion medically significant), PAIN (pain) and PERIPHERAL SWELLING (swelling in both legs all the way up to her stomach). At the time of the report, THROMBOSIS (blood clots in both groins), PAIN (pain) and PERIPHERAL SWELLING (swelling in both legs all the way up to her stomach) had not resolved. The action taken with SPIKEVAX NOS (SPIKEVAX NOS) (Unknown) was unknown. Concomitant medication information was not provided. It was reported that the patient had received the vaccine at the age of 88 and was now living with blood clots in both groins. It was further reported that the only explanation provided by the vein specialist was the Moderna vaccine administered in 2025, three months after given. It was also reported that the clots could not be removed or dissolved, leaving the patient to live with persistent pain and swelling in both legs extending up to her stomach. It was unknown if the patient experienced any additional symptoms or events. Treatment medication was not reported. This case was linked to US-MODERNATX, INC.-MOD-2026-793530 (E2B Linked Report).; Reporter's Comments: Company comment: The benefit-risk relationship of the product is not affected by this report.; Sender's Comments: US-MODERNATX, INC.-MOD-2026-793530:Master case, same reporter