Vial initially stored in the refrigerator on 9 Jun 2023, bud date was 9 Jul 2023 and shouldn't have given it past the 9 Jul 2023 and administered vaccine on 12 Jul 2023; No adverse event; Caller reports they mistakenly gave 3 clients expired Moderna vaccine on the 12th; This spontaneous case was reported by an other health care professional and describes the occurrence of EXPIRED PRODUCT ADMINISTERED (Caller reports they mistakenly gave 3 clients expired Moderna vaccine on the 12th), PRODUCT STORAGE ERROR (Vial initially stored in the refrigerator on 9 Jun 2023, bud date was 9 Jul 2023 and shouldn't have given it past the 9 Jul 2023 and administered vaccine on 12 Jul 2023) and NO ADVERSE EVENT (No adverse event) in a  patient of an unknown age and gender who received mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (batch no. AS7644C) for COVID-19 prophylaxis.     No Medical History information was reported.    On 12-Jul-2023, the patient received dose of mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (unknown route) .5 milliliter. On 12-Jul-2023, the patient experienced EXPIRED PRODUCT ADMINISTERED (Caller reports they mistakenly gave 3 clients expired Moderna vaccine on the 12th). On an unknown date, the patient experienced PRODUCT STORAGE ERROR (Vial initially stored in the refrigerator on 9 Jun 2023, bud date was 9 Jul 2023 and shouldn't have given it past the 9 Jul 2023 and administered vaccine on 12 Jul 2023) and NO ADVERSE EVENT (No adverse event). At the time of the report, EXPIRED PRODUCT ADMINISTERED (Caller reports they mistakenly gave 3 clients expired Moderna vaccine on the 12th), PRODUCT STORAGE ERROR (Vial initially stored in the refrigerator on 9 Jun 2023, bud date was 9 Jul 2023 and shouldn't have given it past the 9 Jul 2023 and administered vaccine on 12 Jul 2023) and NO ADVERSE EVENT (No adverse event) outcome was unknown.        For mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (Unknown), the reporter considered NO ADVERSE EVENT (No adverse event) to be not related. No further causality assessments were provided for EXPIRED PRODUCT ADMINISTERED (Caller reports they mistakenly gave 3 clients expired Moderna vaccine on the 12th) and PRODUCT STORAGE ERROR (Vial initially stored in the refrigerator on 9 Jun 2023, bud date was 9 Jul 2023 and shouldn't have given it past the 9 Jul 2023 and administered vaccine on 12 Jul 2023).    Concomitant Medication use information was not provided by reporter.  Caller reported that they mistakenly gave 3 clients expired Moderna vaccine on the 12th. The bud date was the 9th of July and shouldn't have given it past the 9th the July.  2 doses were there.  Vial size was reported as blue cap.   Date the vial was initially stored in the refrigerator was 09-Jun-2023.   The vial did not undergo any temperature excursions.  It was unknown if patient receive any other vaccines in the 4 weeks prior to COVID-19 vaccine.  Treatment Medication use information was not provided by reporter.   This case was linked to US-MODERNATX, INC.-MOD-2023-733172 (E2B Linked Report).; Sender's Comments:  US-MODERNATX, INC.-MOD-2023-733172:Patient 1 (Master Case)