Vaccine was expired on 20-May-2022 and was stored in refrigerator on 07-Jun-2022; No adverse event; Vaccine was expired on 20-May-2022 and was administered to patient on 08-Jun-2022; This spontaneous case was reported by an other health care professional and describes the occurrence of EXPIRED PRODUCT ADMINISTERED (Vaccine was expired on 20-May-2022 and was administered to patient on 08-Jun-2022), PRODUCT STORAGE ERROR (Vaccine was expired on 20-May-2022 and was stored in refrigerator on 07-Jun-2022) and NO ADVERSE EVENT (No adverse event) in a 74-year-old patient of an unknown gender who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. 033K21-2A) 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 31-Mar-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 08-Jun-2022, received fourth dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) dosage was changed to 1 dosage form. On 08-Jun-2022, the patient experienced EXPIRED PRODUCT ADMINISTERED (Vaccine was expired on 20-May-2022 and was administered to patient on 08-Jun-2022). On an unknown date, the patient experienced PRODUCT STORAGE ERROR (Vaccine was expired on 20-May-2022 and was stored in refrigerator on 07-Jun-2022) and NO ADVERSE EVENT (No adverse event). At the time of the report, EXPIRED PRODUCT ADMINISTERED (Vaccine was expired on 20-May-2022 and was administered to patient on 08-Jun-2022), PRODUCT STORAGE ERROR (Vaccine was expired on 20-May-2022 and was stored in refrigerator on 07-Jun-2022) 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 (Vaccine was expired on 20-May-2022 and was administered to patient on 08-Jun-2022) and PRODUCT STORAGE ERROR (Vaccine was expired on 20-May-2022 and was stored in refrigerator on 07-Jun-2022).    No concomitant medications were reported.  Vaccine was initially stored in refrigerator on 07-Jun-2022. The vial did not undergo any temperature excursion issue.  The reporter thought that previously expiration date of the vial was 20-Jun-2022 when the reporter looked up to it but however, the reporter had nothing in writing or printed to confirm the expiration date of 20-Jun-2022 for the vial.  On 08-Jun-2022, the patient received booster dose of Moderna COVID-19 vaccine.  No adverse events were reported by the reporter. It was unknown if the event cause patient to seek medical care. It was unknown if the patient had experienced a similar event in the past. It was unknown if patient had allergy. It was unknown that patient had ever covid-19 positive test or diagnosis.  No treatment medication was reported.   Most recent FOLLOW-UP information incorporated above includes: On 01-Sep-2022: Live follow up received contains suspect product dose details, expiration date and I narrative were added. On 02-Sep-2022: Follow up received included no new information.