perimyocarditis; this is a spontaneous report received from a contactable reporter(s) (physician) from the regulatory authority-web. regulatory number: at-basgages-2021-077850. a 20 year-old male patient received bnt162b2 (comirnaty), administration date 29jun2021 (lot number: unknown) as dose 2, single for covid-19 immunisation. the patient had no relevant medical history. the patient's concomitant medications were not reported. vaccination history included: comirnaty (dose 1), for covid-19 immunization. the following information was reported: myocarditis (hospitalization, medically significant) with onset 01jul2021, outcome "recovered", described as "perimyocarditis". relatedness of drug to reaction was assessed by health care professional by assessment method. no follow-up attempts are possible; information about lot/batch number cannot be obtained. no further information is expected