Cardiac arrest; Pulmonary embolus; Renal failure; Fever; Dehydration; Not eating or drinking; COVID-19 confirmed by positive COVID-19 test / COVID pneumonia; blood clot; blood pressure was low; Respiratory arrest; Respiratory failure; Hypoxemia; ventricular tachycardia; This is a spontaneous report from a contactable nurse reporting on behalf of the husband. A 71-year-old male patient received the first single dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE; lot EL9264) on 10Feb2021 at about 19:00 (at the age of 71 years), in left deltoid, for COVID-19 immunisation. No other vaccines were given on the same day or within 4 weeks. The patient declined flu vaccine and pneumococcal vaccine (PNEUMOVAX), he had never had another vaccine except maybe his childhood vaccines. Medical history included rotator cuff surgery and cataract removed in 2020. The patient exercised regularly, he was healthy, he walked for miles and didn't eat any non-sense, he did not eat out, he did not smoke. The patient's mother was 100 years old and fully competent. The patient had two sisters older than him, the oldest one had hypertension the second sister did not have anything that they were aware of. The patient's father lived until he was 98 years old. The patient concomitant medications were none. The patient was told to take vitamin D 50,000 units but didn't even take them (he still had 9 of them in the bottle and they gave him 13). The patient experienced fever on 11Feb2021, renal failure on 14Feb2021, pulmonary embolus on 28Feb2021, cardiac arrest on 04Mar2021, dehydration and not eating or drinking on an unspecified date in Feb2021. These events required ER visit and were reported as serious as involved hospitalization from 14Feb2021 to 04Mar2021 and as fatal events. The patient died on 04Mar2021. Clinical course of the events included the following information. The patient received the first vaccine on 10Feb2021, the next day he developed a fever. The reporter spoke with the patient's doctor who told to give the patient paracetamol (TYLENOL) thinking the fever was from the vaccine. On 12Feb2021 and 13Feb2021, the patient's temperature was 102. Then the doctor advised to take the patient to the hospital. The patient's temperature was still 102, he was in renal failure, and they had to dialyze him. The patient was otherwise healthy, the patient's last physical was in Dec2020 and the only thing it showed was that his A1C was 5.7. The patient had no cholesterol or hypertension. The doctor advised the patient to decrease sugar and carbs because the holidays were coming up. The patient's follow up was scheduled on Mar2021. The reporter felt that the vaccine has something to do with the patient renal failure. The reporter spoke with the doctors at the hospital who didn't want to commit to anything. The reporter believed this was an adverse event. The caller mentioned that she had her vaccine before and she was fine. The patient was admitted on 14Feb2021 and by Wednesday he was not eating or drinking, he was dehydrated. The patient's admitting diagnoses was elevated temperature and ruling out COVID. The patient tested positive for Covid on 14Feb2021 (COVID-19 PCR test). The patient's temperature was 99.8 and then kept creeping up, on Saturday it was 102. The caller gave the patient Tylenol cold and flu (lot T0CL001021, expiry date Oct2021) took the edge off but in three hours the temperature was back up again. The patient never complained of pain and didn't want to take Tylenol. On 15Feb2021 the patient's numbers were getting better after the fluid challenge and then his numbers kept creeping up after that. The patient had the fever a week until they had it under control. The fever went away, it was gone for like 5 days, then it spiked again. The patient was started on piperacillin/tazobactam (ZOSYN) for like 3 or 5 days and the fever went away but then it kept getting worse. On 28Feb2021, the medical personnel thought the patient had a pulmonary emboli but because of the renal failure, they couldn't do a computerized tomography on the patient. The doctors mentioned that the patient was in renal failure and they thought they heparinized the patient and he had a blood clot who led to pulmonary embolus, cardiac arrest, and death. The patient was diagnosed with a pulmonary emboli on 28Feb2021. The patient started de-saturating and the doctors intubated and sedated him that whole time until this. Dialysis was started on 01Mar2021 and the patient received it every day except 04Mar2021. The patient's blood pressure was normal, it hardly ever went above 120. The patient was on the medical floor from 22Feb2021 to 04Mar2021. When the patient was on the medical surgical floor, he was on high flow 5 liters. After the patient started desaturating, he went to the intensive care unit and was put on a non-rebreather on 45%. The patient's highest heart rate was after intubation was 135, but the patient's blood pressure was low so they started him on some vasopressors. They did the fluid challenge on the patient and his labs were a little better than the labs kept creeping up until the doctor inserted a shiley catheter for dialysis. Respiratory: Respiratory arrest and then cardiac arrest. Respiratory failure, they intubated the patient. The reporter assumed dyspnea because the patient was intubated. Tachypnea was when the patient was in the intensive care unit already intubated. Hypoxemia, they intubated the patient so the caller guessed it was for the oxygen saturation drop. Covid pneumonia: yes. Chest x-ray showed mild pneumonia. The caller requested a follow up x-ray and the doctors said they were going to do another one but the caller is unsure if they did or when. The patient received additional therapies for COVID-19: remdesivir. Other radiological investigations: unable because of the patient's kidney function. They were looking at the D dimer and BMP to come up with the embolus since the patient couldn't have the scan. ARDS: no. Cardiovascular: The patient had a heart attack on 04Mar2021. The reporter thought it was from the pulmonary embolus which led to cardiac arrest. Arrhythmia: the caller guessed so, the patient was being worked on for 10 minutes before the caller got there. The caller saw a rhythm strip which showed a flat line and then she noticed ventricular tachycardia, then a flat line. The patient did not have SARS-CoV2 antibodies at diagnosis. Gastrointestinal/Hepatic, neurological, hematological, dermatological: none. Vascular: pulmonary embolus: yes, deep vein thrombosis, limb ischemia, vasculitis: no. Renal: renal failure: yes, acute kidney injury: no. The patient was scheduled for his second vaccine dose on 03Mar2021 at 04:15 but did not receive it. Time of death was 4:15 in the afternoon on 04Mar2021. The reporter considered renal failure, fever, dehydration, not eating or drinking, cardiac arrest and pulmonary embolus as fatal and related to the suspect vaccine. The outcome of the other events was unknown. Cause of death was unknown. No autopsy was performed.; Sender's Comments: Based on current information available, the company considered there is a possibility that all reported events are consequence of COVID-19 pneumonia on the basis of advanced age. The positive COVID-19 test occurred 4 days after the first injection of suspect vaccine BNT162B2. No complete effect can be achieved for short time interval. The COVID-19 is more likely pre-existing colonization or intercurrent condition, unrelated to suspect vaccine BNT162b2.  The impact of this report on the benefit/risk profile of the Pfizer product is evaluated as part of Pfizer procedures for safety evaluation, including the review and analysis of aggregate data for adverse events. Any safety concern identified as part of this review, as well as any appropriate action in response, will be promptly notified to RAs, Ethics Committees, and Investigators, as appropriate.; Reported Cause(s) of Death: Renal failure; Fever; Dehydration; Not eating or drinking; Cardiac arrest; Pulmonary embolus