We almost "lost" him; He was having kind of heart attacks but he wasn't; Severe Chest pain; they said he may never get rid of the pain in his Chest; he went blind for an hour; Arm numbness on left side of his arm; lost all feeling on his left side; Fever; He was freezing and it was very bad; He couldn't breath, they put him on oxygen; He had Booster shot 3 months in between but they said it should be received in between 6 months.; He had Booster shot 3 months in between but they said it should be received in between 6 months.; He had Booster shot 3 months in between but they said it should be received in between 6 months.; This is a spontaneous report from a contactable consumer (patient's wife). A 60-year-old male patient received BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE), via an unspecified route of administration on 25Aug2021 (Batch/Lot Number: EW0177) (at the age of 60-years-old) as dose 3, single for COVID-19 immunisation. Medical history included heart transplant recipient and was in the hospital due to COVID Pneumonia. He had COVID before the shot (vaccination) and he spent 5 days in ICU in Jan2021. The patient was previously administered with first dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, lot: ER8735) on 16Apr2021 and second dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, lot: ER8735) on 07May2021; both at the age of 60-years-old for COVID-19 immunisation and experienced minimal side effects like sore arm, just aches and pains, nothing major for his first two doses of Pfizer vaccine. Patient was taking a lot of unspecified concomitant medications. The patient's heart transplant office called and said that he can get his Booster shot, so he got the Booster shot on Wednesday on 25Aug2021. On 29Aug2021, he had severe chest pain, he went blind for an hour. He had arm numbness on the left side of his arm. He had fever, he was freezing and it was very bad. When they got him finally stabilized so to transport him and got him down to the Hospital and they did all the test, the transplant office, our local Doctors and then he had to go see a Neurologist all said that it was an adverse reaction due to the Booster shot. He had Booster shot 3 months in between but they said it should be received in between 6 months. Neurologist said the patient may never get rid of the pain in his chest. Reporter stated, they almost "lost" (not clarified) him and now he is having this side effect this lasting forever. Patient was hospitalized from 29Aug2021 and discharged from the hospital on 02Sep2021, he had a Neurology appointment like he lost all feeling on his left side. He had chest X-ray. The blood work was done troponin, CYA, D-dimer. When probed for reason of Hospitalization, reporter stated, the main side effect was severe pain in the chest. When they put him in the Ambulance he was on the Machine, he was having kind of heart attacks, so they rushed him to the Hospital. By the time he got there, he couldn't breathe. They put him on oxygen. He also had to have Cardiac catheterization. When probed for any laboratory test, reporter stated, he was in the Hospital they did an MRI, a CAT scan. When probed for any treatment for the events, reporter stated, patient was given Nitro Pills, Morphine, they gave him "Dalada" (further not clarified), and they gave him Ativan. They tried to take that pain away. Outcome of event blind was recovered on 29Aug2021 while rest of events was recovered on 02Sep2021.   Follow-up attempts are completed. No further information is expected.