TIA after second Covid vaccine; Massive stroke after second Covid vaccine; had more strokes in the hospital; Blood clot after second Covid vaccine; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP) from medical information team. The reporter is the patient.  A 59-year-old male patient received BNT162b2 (BNT162B2), in Feb2022 as dose 2, single (Batch/Lot number: unknown) intramuscular, in right arm for covid-19 immunisation. The patient's relevant medical history and concomitant medications were not reported. Vaccination history included: Bnt162b2 (DOSE 1, SINGLE, Anatomical Site of injection: maybe left arm, Route of Administration: intramuscular, Batch/Lot number: Unknown, Outcome of reaction/event at the time of last observation: Recovered/Resolved), for COVID-19 immunization, reaction(s): "Stroke". The following information was reported: THROMBOSIS (hospitalization, medically significant) with onset 26Jul2022, outcome "recovered with sequelae" (26Jul2022), described as "Blood clot after second Covid vaccine"; CEREBROVASCULAR ACCIDENT (hospitalization, medically significant) with onset 26Jul2022, outcome "unknown", described as "Massive stroke after second Covid vaccine; had more strokes in the hospital"; TRANSIENT ISCHAEMIC ATTACK (hospitalization, medically significant) with onset 2023, outcome "recovered with sequelae" (2023), described as "TIA after second Covid vaccine". The patient was hospitalized for cerebrovascular accident, thrombosis (start date: 26Jul2022). The events "massive stroke after second covid vaccine; had more strokes in the hospital", "blood clot after second covid vaccine" and "tia after second covid vaccine" required physician office visit and emergency room visit. Therapeutic measures were taken as a result of cerebrovascular accident, thrombosis, transient ischaemic attack.  Clinical coarse: Reporter Stated he went to see his doctor; was not hospitalized; told to stop work. Massive stroke after second Covid vaccine had two more strokes initially when admitted to the hospital Intensive Care Unit; and then had some more strokes in the hospital after that time. He thinks maybe he had his second vaccine in Feb2022, but is unsure; doesn't have vaccine card. Patient hospitalization to discharged 3 or 4 days after admission. Outcome went to nursing home for rehabilitation. Blood clot after second Covid vaccine: Patient hospitalization to discharged 3 or 4 days after admission. TIA after second Covid vaccine, caller stated she has refused to get the Covid booster. No prior Vaccinations (within 4 weeks). Adverse Events: Note: For Thromboembolic events with Thrombocytopenia Include specific relevant test aboveTerm/Date/Time: Onset Time: first stroke mid afternoon; second stroke and blood clot mid afternoon. TIA early morning. AE required visit to: check all that apply: Emergency Room. Physician Office. Intensive Care Unit; if admitted to ICU, duration of stay. see formal field. AE Outcome: see formal field. Treatment patient did the event require the initiation of new medication/other treatment/ procedure hospitalization was given a lot of medication. Caller cannot provide specific names of treatment.   The information on the batch/lot number for BNT162b2 has been requested and will be submitted if and when received.; Sender's Comments: Linked Report(s) : US-PFIZER INC-202300039622 same product, patient, different AEs, different dose;