Feverish; Headache; Lethargic; achiness/feels achy; sore arm; Not feeling well; Cold; he (her husband) could have died; Blood pressure at 78/45/blood pressure dropped to 75/48; pulse in the 40s/heart rate was in the 40's; warm sensation in his upper torso; This is a spontaneous report from a Pfizer-sponsored program COVAX US Support. A contactable consumer (patient's wife) reported that a 64-year-old male patient received second dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, solution for injection, Lot Number: OER8731), via an unspecified route of administration, administered in Left arm on 18Apr2021 (at the age of 64-year-old, Time the Vaccination Was Given also reported as 15550 18Apr2021) at single dose for Covid-19 Virus. The patient medical history was not reported. No family medical history relevant to events. There were no concomitant medications. No additional vaccines administered on same date of the Pfizer suspect. The patient previously received first dose of bnt162b2 (PFIZER-BIONTECH COVID-19 VACCINE, Lot Number: EO6955, Expiry date: Jun2021), intramuscularly administered in Left arm on 28Mar2021 (at the age of 64-year-old) at single dose for Covid-19 Vaccination and had no problems. No other prior vaccinations within 4 weeks and no events following prior vaccinations. Patient received second dose on 18Apr2021. He sat down in his chair stayed for 15 mins after his vaccine like they asked to. All of a sudden, he had a warm sensation in his upper torso on 18Apr2021. Blood pressure at 78/45 and pulse in the 40s on 18Apr2021. They called the ambulance and he was taken to the hospital. His blood pressure had since recovered but he's not feeling well on 18Apr2021. 19Apr2021 he had achiness and a sore arm, reporter asked could he take Tylenol. They were told by the nurse to try to delay medication as much as possible. Reporter also reported that he (her husband) could have died, they felt like they should have been warned about the adverse event her husband went through. Patient was not feeling well today 19Apr2021 and had not contacted his physician yet. Patient felt a warm sensation over his upper torso and felt like getting a CT/CAT scan with contrast on 18Apr2021. His blood pressure dropped to 75/48 (also reported as dropped to 75 over 48) and heart rate was in the 40's on 18Apr2021. The nurse who gave him the injection came, laid him down, called an ambulance for him and he had to go to the hospital. When the ambulance got there, the EMS tried to stand him up and his blood pressure kept dropping and so they took him to the hospital. Patient started not feeling well within minutes after getting the vaccine on 18Apr2021. He felt better than yesterday (18Apr2021) though. She said that 19Apr2021 he just felt achy and feverish, he had a headache and is lethargic today 19Apr2021. Patient experienced the warm sensation in his torso a few minutes after getting the injection and it lasted about 3 minutes. Yesterday (18Apr2021) evening he stabilized and when his blood pressure went back to normal the emergency room let him go home. He was kept in the ER for observation and was not admitted. Events blood pressure dropped to 75/48 and Heart rate in the 40's required a visit to Emergency Room, no physician office visit. Reporter further reported that after 15 minutes of vaccine on 18Apr2021, patient's blood pressure went down to 78/48 and he was cold. The outcome of the events blood pressure decreased and heart rate decreased was recovered on 18Apr2021, warm sensation was recovered on 18Apr2021 for about 3 minutes, not feeling well was recovering, outcome of events could have died and cold was unknown, outcome of the other events was not recovered.