chest pains and it was only when inhaling. It was very bad pains; viral infection; fluid around his heart; diagnosed him also with pericarditis; This is a spontaneous report from a Pfizer sponsored program received from a contactable consumer (patient). A 77-year-old male patient received the second dose of BNT162b2 (PFIZER-BIONTECH COVID-19 VACCINE; lot number: EP1533), in the left arm on 05Apr2021 in the morning (at the age of 77-years-old) at dose 2, single for COVID-19 immunisation. Patient's medical history (including any illness at time of vaccination) was reported as none. Family medical history relevant to events was reported as none. Concomitant medications were reported as none. No other vaccines given the same day and no problems with vaccines in the past. Events following prior vaccinations were reported as none. The patient previously received the first dose of BNT162B2 (lot number: EP6955) on 15Mar2021 (at the age of 77-years-old) in the left arm for COVID-19 immunization and experienced no adverse effect. Patient believed he was having a reaction from the second dose of BNT162B2 vaccine. It had been going on for many months and he was on Pfizer website to look at the side effects and he believed he had all the symptoms of pericarditis. He had been to a few doctors and no one seemed to know what was going on. He was looking for suggestions on what was going on. Patient had his second dose on 05Apr2021 and around the beginning of Jun2021 he started having chest pains and it was only when inhaling. It was very bad pains. It was not too bad, but then he ended up at the hospital and had to go to the emergency room. He was there for 5 days in 2021. They determined he had a build up of fluid around his heart in 2021 and they put a part in his chest for a window in the chest to drain the fluid. Unable to provide any further details about the part put in chest to drain fluid. He was pretty sure they got about 700ml of fluid, he was not 100% sure, but maybe 600-700ml of fluid they got. They then put him on a drug, colchicine, about the 08Aug2021, but it started up back again and then he ended up in hospital. They diagnosed him also with pericarditis in 2021 and he stayed there for 5 days also. He went to a number of doctors, his regular family doctor, a heart doctor, endocrinologist, rheumatologist, dermatologist, and a nephrologist. They all seemed to think he had a viral infection in 2021. On 20Sep2021 his heart doctor increased the colchicine from one time a day to two times a day. Around the 23Sep2021 the problems seemed to disappear and he did not have it at the time of the report. Stated that his heart doctor explicitly said when they increased his colchicine 0.6mg pharmacy bottle, he was specifically told not to get the booster shot. Patient mentioned that he could need to get a magnifying glass. When he got the bottle of colchicine he was told to take one tablet by mouth once a day, but they increased it to once in the am and pm. At the moment of the report, he was out of it and had to call his heart doctor so they could send a prescription to the pharmacy. Stated as of a couple of weeks prior the report the symptoms had all stopped and he was just calling to let the company know that one of the symptoms that was said on the website was one he had. The events required a visit to emergency room and physician office. The patient was hospitalized for the events for 5 days in 2021. The patient had recovered from the events on 23Sep2021.