No adverse event; A pharmacy staff reports that they inadvertently administered 51 doses of the monovalent vaccines/ expiration date 13-Jul-2022 Date(s) of administration of vaccine were -04-Aug-2022; First dose was administered on 03-Mar-2021 and second dose administered on 28-Apr-2021; 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 13-Jul-2022 Date(s) of administration of vaccine were -04-Aug-2022), INAPPROPRIATE SCHEDULE OF PRODUCT ADMINISTRATION (First dose was administered on 03-Mar-2021 and second dose administered on 28-Apr-2021) and NO ADVERSE EVENT (No adverse event) in a 23-year-old female patient who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 004M21A) for COVID-19 prophylaxis.     No Medical History information was reported.   On 03-Mar-2021, the patient received first dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 28-Apr-2021, received second dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 04-Aug-2022, received third dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 28-Apr-2021,  after starting mRNA-1273 (Moderna COVID-19 Vaccine), the patient experienced INAPPROPRIATE SCHEDULE OF PRODUCT ADMINISTRATION (First dose was administered on 03-Mar-2021 and second dose administered on 28-Apr-2021). On 04-Aug-2022, the patient experienced EXPIRED PRODUCT ADMINISTERED (A pharmacy staff reports that they inadvertently administered 51 doses of the monovalent vaccines/ expiration date 13-Jul-2022 Date(s) of administration of vaccine were -04-Aug-2022). 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 13-Jul-2022 Date(s) of administration of vaccine were -04-Aug-2022), INAPPROPRIATE SCHEDULE OF PRODUCT ADMINISTRATION (First dose was administered on 03-Mar-2021 and second dose administered on 28-Apr-2021) and NO ADVERSE EVENT (No adverse event) outcome was unknown.        For mRNA-1273 (Moderna COVID-19 Vaccine) (Unknown), the reporter considered NO ADVERSE EVENT (No adverse event) to be not related. No further causality assessments were provided for EXPIRED PRODUCT ADMINISTERED (A pharmacy staff reports that they inadvertently administered 51 doses of the monovalent vaccines/ expiration date 13-Jul-2022 Date(s) of administration of vaccine were -04-Aug-2022) and INAPPROPRIATE SCHEDULE OF PRODUCT ADMINISTRATION (First dose was administered on 03-Mar-2021 and second dose administered on 28-Apr-2021).    No concomitant medications were provided. Pharmacy staff reported that they inadvertently administered 51 doses of the monovalent vaccines. Lot number 004M21A, expiration date 13-Jul-2022 Date(s) of administration of vaccine were 26-Jul-2022 (40 doses), 04-Aug-2022 (1 dose), 19-Aug-2022 (1 dose), 30-Sep-2022 (1 dose). No treatment medication was provided.   This case was linked to US-MODERNATX, INC.-MOD-2023-704260 (Linked Report).; Sender's Comments:  US-MODERNATX, INC.-MOD-2023-704260:master case