No Adverse event; A pharmacy staff reports that they inadvertently administered 51 doses of the monovalent vaccines/expiration date 13Jul2022 Date(s) of administration of vaccine were -26Jul2022; This spontaneous case was reported by an other health care professional and describes the occurrence of EXPIRED PRODUCT ADMINISTERED (A pharmacy staff reports that they inadvertently administered 51 doses of the monovalent vaccines/expiration date 13Jul2022 Date(s) of administration of vaccine were -26Jul2022) and NO ADVERSE EVENT (No Adverse event) in an 89-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch nos. 004M21A, 014F21A, 030L20A and 025L20A) for COVID-19 prophylaxis.     It was unknown that the patient had ever been diagnosed with or tested positive for Covid-19. It was unknown that the patient had chronic or longstanding health conditions. It was unknown that the patient was taking medication at the time of vaccination.    On 11-Jan-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 08-Feb-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 08-Nov-2021, received third dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 26-Jul-2022, received fourth dose of mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular) dosage was changed to .25 milliliter. On 26-Jul-2022,  after starting mRNA-1273 (Moderna COVID-19 Vaccine), the patient experienced EXPIRED PRODUCT ADMINISTERED (A pharmacy staff reports that they inadvertently administered 51 doses of the monovalent vaccines/expiration date 13Jul2022 Date(s) of administration of vaccine were -26Jul2022). On an unknown date, the patient experienced NO ADVERSE EVENT (No Adverse event). At the time of the report, EXPIRED PRODUCT ADMINISTERED (A pharmacy staff reports that they inadvertently administered 51 doses of the monovalent vaccines/expiration date 13Jul2022 Date(s) of administration of vaccine were -26Jul2022) and NO ADVERSE EVENT (No Adverse event) outcome was unknown.        For mRNA-1273 (Moderna COVID-19 Vaccine) (Intramuscular), the reporter considered NO ADVERSE EVENT (No Adverse event) to be not related. No further causality assessment was provided for EXPIRED PRODUCT ADMINISTERED (A pharmacy staff reports that they inadvertently administered 51 doses of the monovalent vaccines/expiration date 13Jul2022 Date(s) of administration of vaccine were -26Jul2022).    No concomitant product reported by reporter. Pharmacy staff reported that they inadvertently administered 51 doses of the monovalent vaccines. Lot number 004M21A, expiration date 13Jul2022 Date(s) of administration of vaccine were 26Jul2022 (40 doses), 04Aug2022 (1 dose), 19Aug2022 (1 dose), 30Sep2022 (1 dose). No treatment medication was reported.   This case was linked to MODERNATX, INC.-MOD-2023-704260 (E2B Linked Report).   Most recent FOLLOW-UP information incorporated above includes: On 02-Feb-2023: Followup received contains updated reporter details, route of administration and anatomical location of suspect.; Sender's Comments:  MODERNATX, INC.-MOD-2023-704260:Master case