States there was a pharmacist in from a temp agency and that pharmacist took an expired vial(expired one week prior) and diluted and gave to 6 patients; States there was a pharmacist in from a temp agency and that pharmacist took an expired vial(expired one week prior) and diluted and gave to 6 patients; Fatigue; This is a spontaneous report from a contactable pharmacist reported for patient. A 36-years-old female patient received an unknown dose of BNT162B2 (PFIZER-BIONTECH COVID-19 VACCINE, Formulation: Solution for injection, Batch/Lot number: EW0170, Expiration date: unknown) via an Intramuscular route, administered at Left Arm on 14Jun2021 09:22 (age at vaccination was 36 years) as DOSE 2, SINGLE for COVID-19 immunization. The patient's medical history and concomitant medications were not reported. The patient previously received first dose of BNT162B2 (Batch/Lot number: EW0178) via an Intramuscular route, administered at Left Arm on 22May2021 09:37 (age at vaccination was 36 years) as DOSE 1, SINGLE for COVID-19 immunization. The caller stated that she was a pharmacist speaking about the Pfizer COVID-19 vaccine. Stated that there was a pharmacist in from a temp agency and that pharmacist took an expired vial (expired one week prior) and diluted and gave to 6 patients on unspecified date. The caller stated that the vaccine had no other excursions while being stored. She wanted to know if the patients need to be revaccinated. The case was reported as non-serious. Visiting Pharm serve pharmacist removed expired (clearly marked so) reconstituted and administered to 6 separate people. Vaccine was sequestered to destroy pending approval/acknowledgement. Patients reported no adverse effects but did experience normal side effects, In this case, fatigue. Patient elected to not get another dose of vaccine. Visiting Pharm serve pharmacist pulled clearly marked 'Expired' vaccine reconstituted and administered vaccine to 6 separate individuals. Patient reported no adverse effects only normal side effects. Patient did not want to repeat vaccine for 3rd dose. The Outcome of event was unknown.  Follow up attempt possible. Information on the lot/batch number has been requested.  Follow-up (02Jul2021): This follow-up is being submitted to notify that the lot/batch number is not available despite the follow-up attempts made. Follow-up attempts have been completed and no further information is expected.  Follow up (23Jul2021): This is a follow up spontaneous report received from a contactable pharmacist. This pharmacist reported in response to HCP letter sent via follow-up which included that: Suspect product details, Product administration date, Lot number, first dose details and lot number.  Follow up (23Jul2021): This is a follow up spontaneous report received from a contactable pharmacist. This pharmacist reported in response to HCP letter sent via follow-up which included that: Case closure comment added.  Follow up attempts are complete. No further information is expected.; Sender's Comments: Linked Report(s) : US-PFIZER INC-2021716982 same drug/reporter /events different patient;US-PFIZER INC-2021716983 same drug/reporter /events different patient;US-PFIZER INC-2021716984 same drug/reporter /events different patient;US-PFIZER INC-2021716980 same drug/reporter /events different patient;US-PFIZER INC-2021716981 same drug/reporter /events different patient