irritated her heart condition; Clot blood; weakness in legs, couldnt walk with legs; Coma; couldn't breathe; stroke/massive stroke in left side of her brain; Irritated her heart condition, rapid heart beat; Headache; Tiredness; This spontaneous case was reported by a consumer and describes the occurrence of CEREBROVASCULAR ACCIDENT (stroke/massive stroke in left side of her brain), CARDIAC DISORDER (irritated her heart condition), DYSPNOEA (couldn't breathe), THROMBOSIS (Clot blood), COMA (Coma) and MUSCULAR WEAKNESS (weakness in legs, couldnt walk with legs) in a 95-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) for Covid-19 Vaccination. The occurrence of additional non-serious events is detailed below.     Concurrent medical conditions included Heart disease, unspecified, Hypertension and AFib. Concomitant products included APIXABAN (ELIQUIS) for Anticoagulant therapy, SACUBITRIL VALSARTAN SODIUM HYDRATE (ENTRESTO) for Hypertension, METOPROLOL for an unknown indication.    On 10-Mar-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) 1 dosage form. On 11-Mar-2021, the patient experienced HEADACHE (Headache) and FATIGUE (Tiredness). On 12-Mar-2021, the patient experienced MUSCULAR WEAKNESS (weakness in legs, couldnt walk with legs) (seriousness criterion hospitalization). On 13-Mar-2021, the patient experienced CARDIAC DISORDER (irritated her heart condition) (seriousness criterion hospitalization), THROMBOSIS (Clot blood) (seriousness criterion hospitalization) and HEART RATE INCREASED (Irritated her heart condition, rapid heart beat). On 15-Mar-2021, the patient experienced CEREBROVASCULAR ACCIDENT (stroke/massive stroke in left side of her brain) (seriousness criteria death and medically significant). On 16-Mar-2021, the patient experienced DYSPNOEA (couldn't breathe) (seriousness criterion hospitalization prolonged) and COMA (Coma) (seriousness criterion hospitalization prolonged). The patient was hospitalized on 13-Mar-2021 due to CARDIAC DISORDER, COMA, DYSPNOEA, MUSCULAR WEAKNESS and THROMBOSIS. The patient died on 17-Mar-2021. The reported cause of death was massive stroke in left side of her brain. It is unknown if an autopsy was performed. At the time of death, CARDIAC DISORDER (irritated her heart condition), DYSPNOEA (couldn't breathe), THROMBOSIS (Clot blood), COMA (Coma), MUSCULAR WEAKNESS (weakness in legs, couldnt walk with legs), HEART RATE INCREASED (Irritated her heart condition, rapid heart beat), HEADACHE (Headache) and FATIGUE (Tiredness) outcome was unknown.            Action taken with mRNA-1273 in response to the events was not Applicable.  This case concerns an 95 year old female patient, with medical history of  A Fib, Heart disease, Hypertension who experienced a serious unexpected event of Death 8 days after receiving 1st dose of mRNA- 1273 . Very limited information regarding these events has been provided at this time.  However, the patient's advance age, multiple co-morbidities,  may remain as risk factors. Further information is requested.   This case was linked to MOD-2021-074814 (Patient Link).; Sender's Comments: This case concerns an 95 year old female patient, with medical history of  A Fib, Heart disease, Hypertension who experienced a serious unexpected event of Death 8 days after receiving 1st dose of mRNA- 1273 . Very limited information regarding these events has been provided at this time.  However, the patient's advance age, multiple co-morbidities,  may remain as risk factors. Further information is requested.; Reported Cause(s) of Death: massive stroke in left side of her brain