off label use; interchange of vaccine products; delayed period; this is a spontaneous report received from contactable reporter(s) (consumer or other non hcp) from the regulatory authority-web. regulatory number: gb-mhra-webcovid-202202120727546930-fti1f (ra). other case identifier(s): gb-mhra-adr 26597460 (ra). a female patient received bnt162b2 (comirnaty), administration date 28dec2021 (batch/lot number: unknown) as dose 3 (booster), single for covid-19 immunisation. the patient's relevant medical history and concomitant medications were not reported. patient has not had symptoms associated with covid-19. vaccination history included: covid-19 vaccine (dose 1, manufacturer: unknown), for covid-19 immunization; covid-19 vaccine (dose 2, manufacturer: unknown), for covid-19 immunization. the following information was reported: off label use (medically significant) with onset 28dec2021, outcome "unknown", described as "off label use"; interchange of vaccine products (medically significant) with onset 28dec2021, outcome "unknown", described as "interchange of vaccine products"; menstruation delayed (medically significant) with onset 28dec2021, outcome "not recovered", described as "delayed period". the patient underwent the following laboratory tests and procedures: sars-cov-2 test: negative, notes: no - negative covid-19 test. clinical course: patient has not tested positive for covid-19 since having the vaccine. patient was not enrolled in clinical trial. this report not related to possible inflammation of the heart (myocarditis or pericarditis). no follow-up attempts are possible; information about lot/batch number cannot be obtained. no further information is expected

test name: covid-19 virus test; test result: negative ; comments: no - negative covid-19 test

na

na