past away a few hours after getting the Moderna booster; This spontaneous case was reported by a physician and describes the occurrence of DEATH (past away a few hours after getting the Moderna booster) in a 75-year-old male patient who received mRNA-1273 (Moderna COVID-19 Vaccine) for COVID-19 vaccination.     The patient's past medical history included Hypertension (Patient had hypertension, gout and atrial fib for 6 years), Gout (Patient had hypertension, gout and atrial fib for 6 years), Atrial fibrillation (Patient had hypertension, gout and atrial fib for 6 years) and Catheterization arterial (Patient had a catherization of an artery 6 years ago). Concomitant products included DIGOXIN for Atrial fibrillation, PROBENECID for Gout, POTASSIUM, VERAPAMIL, COLCHICINE and ALLOPURINOL (ALOPURINOL) for an unknown indication.    On 25-Oct-2021, the patient received third dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. Death occurred on 25-Oct-2021 The patient died on 25-Oct-2021. The cause of death was not reported. It is unknown if an autopsy was performed.        For mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown), the reporter did not provide any causality assessments.   Reporter stated that patient did not had covid-19.  Patient was very active, biked 12miles a day and roller skated 3-4 hours a day, 3 days a week, with no cardiac symptoms. Patient was not overweight. Patient passed away at 6pm. The patient died suddenly within 1-2 hours after getting booster dose.  Treatment information was not provided.  Company Comment: This case concerns a 75-year-old, male patient, with medical history hypertension, atrial fibrillation and arterial catheterization, who experienced the serious, unexpected event of death. The patient passed away on the floor of his house on the same day after the third dose of mRNA 1273 vaccine. As reported, the patient died suddenly within 1-2 hours after getting booster dose. The patient was very active, biked 12miles a day and roller skated 3-4 hours a day, 3 days a week, with no cardiac symptoms. It is unknown if an autopsy was done. The patient history of hypertension, atrial fibrillation and arterial catheterization remains as confounder to event death. The benefit-risk relationship of mRNA 1273 vaccine is not affected by this report.   Most recent FOLLOW-UP information incorporated above includes: On 24-Nov-2021: Follow up information included no new information. On 15-Dec-2021: Significant Follow up received on 15th Dec. the information added in Inarrative; Sender's Comments: This case concerns a 75-year-old, male patient, with medical history hypertension, atrial fibrillation and arterial catheterization, who experienced the serious, unexpected event of death. The patient passed away on the floor of his house on the same day after the third dose of mRNA 1273 vaccine. As reported, the patient died suddenly within 1-2 hours after getting booster dose. The patient was very active, biked 12miles a day and roller skated 3-4 hours a day, 3 days a week, with no cardiac symptoms. It is unknown if an autopsy was done. The patient history of hypertension, atrial fibrillation and arterial catheterization remains as confounder to event death. The benefit-risk relationship of mRNA 1273 vaccine is not affected by this report.; Reported Cause(s) of Death: Unknown cause of death