palpitations; anxiety; this is a spontaneous report received from a contactable reporter(s) (consumer or other non hcp) from the regulatory authority web. the reporter is the patient. regulatory number: ie-hpra-2022-091949. a 66-year-old female patient received bnt162b2 (comirnaty), administration date 06dec2021 (lot number: fj3438) as dose number unknown (booster), single for covid-19 immunisation. relevant medical history was not reported. there were no concomitant medications. vaccination history included: astra zeneca covid-19/vaxzevria (previous vac astra zeneca and no reaction. unknown dose. chimpanzee adenovirus encoding the sars cov 2 spike glycoprotein (chadox1-s)), for covid-19 immunisation. the following information was reported: palpitations (medically significant) with onset 09dec2021, outcome "recovered" (2022), described as "palpitations"; anxiety (medically significant) with onset 09dec2021, outcome "recovered" (2022), described as "anxiety". the events "palpitations" and "anxiety" were evaluated at the physician office visit. the patient underwent the following laboratory tests and procedures: investigation: unknown results. reporter commented: "went to gp and attended hospital for tests...palpations eased now but would be very hesitant to get another vaccine of this type ( previous vac astra zeneca and no reaction). no one the patient spoke to would confirm the reaction was from the vaccine. no follow-up attempts are possible. no further information is expected