Sore arm; Had a little bit of a low grade fever; Received fourth dose Vaccine; dose 3 and dose 4 on 12Mar2022; This is a spontaneous report received from a contactable reporter(s) (Pharmacist) from medical information team for a Pfizer sponsored program.  A 24 year-old male patient received bnt162b2 (BNT162B2), intramuscular, administered in deltoid right, administration date 12Mar2022 17:30 (Lot number: FK9896, Expiration Date: 30Jun2022) at the age of 24 years as dose 4, single for covid-19 immunisation. The patient had no relevant medical history. There were no concomitant medications. Vaccination history included: Bnt162b2 (Since the third dose Pfizer Covid 19 Vaccine Gray Cap the patient received was expired, Pfizer Covid 19 Vaccine Gray Cap: , Third dose: 12Mar2022, NDC: 59267-1025-01, lot: FK9895, expiration: 11Mar2022 was the date when the vaccine could still be administered. The expiration date is nine months from what is on the vaccine bottle which was labeled, 30Jun2022.  , Route of administration: left arm deltoid , Dose: Adult dose, Gray Cap for age 12 plus), administration date: 12Mar2022, when the patient was 24 years old, for COVID-19 immunization, reaction(s): "Since the third dose Pfizer Covid 19 Vaccine Gray Cap the patient received was expired"; Covid-19 vaccine (Primary immunization series complete but manufacturer unknown, First dose: unknown , NDC/lot/expiration: unknown , Route of administration: unknown), for Covid-19 immunization; Covid-19 vaccine (Primary immunization series complete but manufacturer unknown, Second dose: unknown , NDC/lot/expiration: unknown , Route of administration: unknown), for COVID-19 immunization. The following information was reported: INCORRECT DOSE ADMINISTERED (non-serious) with onset 12Mar2022 17:30, outcome "unknown", described as "Received fourth dose Vaccine"; OVERDOSE (non-serious) with onset 12Mar2022 17:30, outcome "unknown", described as "dose 3 and dose 4 on 12Mar2022"; PAIN IN EXTREMITY (non-serious) with onset 13Mar2022, outcome "unknown", described as "Sore arm"; PYREXIA (non-serious) with onset 13Mar2022, outcome "unknown", described as "Had a little bit of a low grade fever". Relevant laboratory tests and procedures are available in the appropriate section. Therapeutic measures were taken as a result of pain in extremity, pyrexia.  Additional information: Pharmacist who reported they administered the Pfizer Biontech COVID19 vaccine (gray cap) to three patients 1 day after the BUD of 11Mar2022. It was stored in the fridge for more than ten weeks. Agent from DSU also added that one patient received a 4th dose (unexpired) by request. Since the third dose Pfizer Covid 19 Vaccine Gray Cap the patient received was expired, the patient requested to receive a fourth dose of the Pfizer Covid 19 Vaccine Gray Cap that was not expired before the reporter confirmed if re-vaccination was needed. The patient received the fourth dose Pfizer Covid 19 Vaccine Gray Cap on 12Mar2022. The fourth dose Pfizer Covid 19 Vaccine Gray Cap was received in the same arm, received third dose Pfizer Covid 19 Vaccine Gray Cap. The reporter follow up with the patient on 13Mar2022 to make sure the patient was doing okay. Sore arm: The reporter had the expected reaction of sore arm. Had a little bit of a low grade fever: The patient had a little bit of a low grade fever. The patient took Ibuprofen and felt better. The reporter manager followed up again on 15Mar2022 to make sure patient was doing okay and the patient did not respond to the manager and a message was left for the patient. The reporter has not heard back from the patient. The reporter will follow up with the patient again tonight, 18Mar2022. Reporter doesn't know if sore arm was ongoing or went away. Reporter contacted patient on 15Mar2022 to follow up and patient did answer call. Had a little bit of a low grade fever: Reporter was not sure the date the low grade fever began, reporter assumes the low grade fever began around the same time on 13Mar2022. Reporter does think the event was not serious, medically significant, disabling or life threatening. Reporter states the event is a expected reaction. No additional vaccines administered on same date of the Pfizer Suspect. AE(s) was required a visit to emergency room and physician office. No any other vaccinations within four weeks prior to covid vaccine. No AE(s) following prior vaccinations.       No follow-up attempts are possible. No further information is expected.