Cousin who had both vaccines got COVID bad enough to be admitted to hospital; Pneumonia; Blood clots; This spontaneous case was reported by a consumer and describes the occurrence of COVID-19 (Cousin who had both vaccines got COVID bad enough to be admitted to hospital), PNEUMONIA (Pneumonia) and THROMBOSIS (Blood clots) in a male patient of an unknown age who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 prophylaxis.     No Medical History information was reported.   On an unknown date, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On an unknown date, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On an unknown date, the patient experienced COVID-19 (Cousin who had both vaccines got COVID bad enough to be admitted to hospital) (seriousness criterion hospitalization), PNEUMONIA (Pneumonia) (seriousness criteria hospitalization and medically significant) and THROMBOSIS (Blood clots) (seriousness criteria hospitalization and medically significant). At the time of the report, COVID-19 (Cousin who had both vaccines got COVID bad enough to be admitted to hospital), PNEUMONIA (Pneumonia) and THROMBOSIS (Blood clots) outcome was unknown.            No concomitant medications were reported.  Treatment information included that the patient will survive but will be on blood thinners for rest of his life.  This case was identified as part of a retrospective clean-up activity where certain emails received in the Moderna mailbox were missed to be booked-in.  Company comment: This is a spontaneous case reported by a consumer. A male patient of an unknown age, with no reported medical history, received 2 doses of mRNA-1273 vaccine and experienced serious events of COVID-19 (AESI), pneumonia and thrombosis (AESI) that required hospitalization. Vaccination date and onset date of the events were not provided, latency cannot be assessed. It was reported that patient will required blood thinners for the rest of his life. No further details regarding clinical course, diagnostic tests or treatment performed were disclosed. Hospitalization and COVID-19 are risk factors for thromboembolic events. Regarding pneumonia there is a high prevalence of bacterial superinfections in patients with COVID-19 who require hospitalization, there is not enough information in this case to clarify whether the pneumonia was caused by COVID-19 or if it was secondary bacterial pneumonia. The benefit-risk relationship of mRNA-1273 vaccine is not affected by this report.   This case was linked to US-MODERNATX, INC.-MOD-2021-624355 (E2B Linked Report).; Sender's Comments: This is a spontaneous case reported by a consumer. A male patient of an unknown age, with no reported medical history, received 2 doses of mRNA-1273 vaccine and experienced serious events of COVID-19 (AESI), pneumonia and thrombosis (AESI) that required hospitalization. Vaccination date and onset date of the events were not provided, latency cannot be assessed. It was reported that patient will required blood thinners for the rest of his life. No further details regarding clinical course, diagnostic tests or treatment performed were disclosed. Hospitalization and COVID-19 are risk factors for thromboembolic events. Regarding pneumonia there is a high prevalence of bacterial superinfections in patients with COVID-19 who require hospitalization, there is not enough information in this case to clarify whether the pneumonia was caused by COVID-19 or if it was secondary bacterial pneumonia. The benefit-risk relationship of mRNA-1273 vaccine is not affected by this report. US-MODERNATX, INC.-MOD-2021-624355:Sister in law's case