Pericarditis; I have fluid around my heart and lungs; I have fluid around my heart; I have fluid around my lungs; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  An 81-year-old male patient received bnt162b2 (BNT162B2), in 2022 as dose number unknown, single (Batch/Lot number: unknown), in left arm for covid-19 immunisation. The patient's relevant medical history included: "Diabetes" (ongoing); "Hypertension" (unspecified if ongoing). Concomitant medication(s) included: INSULIN taken for diabetes mellitus; OZEMPIC taken for diabetes mellitus; METFORMIN taken for diabetes mellitus (ongoing). The following information was reported: PERICARDIAL EFFUSION (hospitalization, medically significant) with onset Jul2022, outcome "unknown", described as "I have fluid around my heart"; PLEURAL EFFUSION (hospitalization, medically significant) with onset Jul2022, outcome "unknown", described as "I have fluid around my lungs"; PERICARDITIS (hospitalization, medically significant) with onset Jul2022, outcome "unknown", described as "Pericarditis; I have fluid around my heart and lungs". The patient was hospitalized for pericarditis, pericardial effusion, pleural effusion (start date: 2022, discharge date: 2022). The events "pericarditis; i have fluid around my heart and lungs", "i have fluid around my heart" and "i have fluid around my lungs" required emergency room visit. Therapeutic measures were taken as a result of pericarditis, pericardial effusion, pleural effusion. Clinical course: Patient just like to report a side effect of the COVID-19 Shot (Pfizer COVID-19 Shot). He guessed last year after taking may be two of the shots may be three, patient did not. He had never had any heart problems at all, he had not had any indication heart problems. He came down with pericarditis and was hospitalized at that time. He received them at different places at some point of time he went, he travelled to all go to places for getting the shots. He think he received one at Withheld. he had received them at the different places. He had received all of the shots and follow-ups. He did not know when the last one. Hospital details: He think it was in 2022, he did not know the exact month. Date of discharge: He think may be it was in the sort of the summer time he think may be Aug or Jul. He did not have the hospital records in front of me. Start date of event (Pericarditis): He was not diagnosed with it until, he think it was in July. He wasn't diagnosed till he went to the emergency room. He think they just admitted him and he think he did not know exactly the treatment. He know that they probably gave him some pills or some medicines to drain the fluid and that was when they actually drained fluids twice during the admission. He was taking metformin twice a day. No, He think he was taking the Metformin in the morning, taking the two pills of the metformin in the morning. Time of vaccination: He think he could not find his card, it would have been the one that mainly before July of last year, Patient did not know actually. Probably he would have received it at either what we call a drug store. Probably he got them at the drug Store or at the beginning. He was not sure, He did not think that he had any Pfizer Vaccines prior to the COVID-19 Vaccines.  The information on the batch/lot number for bnt162b2 has been requested and will be submitted if and when received.