Pediatric dose was given to adult mistakenly; Moderna COVID-19 vaccine administered to patients post temperature excursion; Moderna COVID-19 vaccine administered to patient post temperature excursion; No Adverse event; This spontaneous case was reported by an other health care professional and describes the occurrence of WRONG PRODUCT ADMINISTERED (Pediatric dose was given to adult mistakenly), PRODUCT TEMPERATURE EXCURSION ISSUE (Moderna COVID-19 vaccine administered to patients post temperature excursion), POOR QUALITY PRODUCT ADMINISTERED (Moderna COVID-19 vaccine administered to patient post temperature excursion) and NO ADVERSE EVENT (No Adverse event) in an adult patient of an unknown gender who received mRNA-1273 (Moderna COVID-19 Vaccine) (batch no. AR5186C) for COVID-19 prophylaxis.     No Medical History information was reported.    On an unknown date, the patient received dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On an unknown date, the patient experienced WRONG PRODUCT ADMINISTERED (Pediatric dose was given to adult mistakenly), PRODUCT TEMPERATURE EXCURSION ISSUE (Moderna COVID-19 vaccine administered to patients post temperature excursion), POOR QUALITY PRODUCT ADMINISTERED (Moderna COVID-19 vaccine administered to patient post temperature excursion) and NO ADVERSE EVENT (No Adverse event). At the time of the report, WRONG PRODUCT ADMINISTERED (Pediatric dose was given to adult mistakenly), PRODUCT TEMPERATURE EXCURSION ISSUE (Moderna COVID-19 vaccine administered to patients post temperature excursion), POOR QUALITY PRODUCT ADMINISTERED (Moderna COVID-19 vaccine administered to patient post temperature excursion) 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 WRONG PRODUCT ADMINISTERED (Pediatric dose was given to adult mistakenly), PRODUCT TEMPERATURE EXCURSION ISSUE (Moderna COVID-19 vaccine administered to patients post temperature excursion) and POOR QUALITY PRODUCT ADMINISTERED (Moderna COVID-19 vaccine administered to patient post temperature excursion).    Concomitant product use was not provided by the reporter.  It was reported there was a temperature excursion between 26-May-2022 to 30-Sep-2022 and lot AR5186C was affected between 08-Sep-2022 to 27-Sep-2022. AR5186C was previously reported. Pediatric dose was given to adults mistakenly and were reported to CDPH, VAERS, CAIR and each patient that received the error dose, with instructions to re-vaccinate 2 months from the initial error dose. 051B22A was kept in the freezer upon receipt of shipment on 01-Aug-2022 and individual vials were put in the refrigerator on the day of use.  No treatment information was provided.   This case was linked to US-MODERNATX, INC.-MOD-2022-669791, US-MODERNATX, INC.-MOD-2022-689578, US-MODERNATX, INC.-MOD-2022-689487, US-MODERNATX, INC.-MOD-2022-689542 (E2B Linked Report).   Most recent FOLLOW-UP information incorporated above includes: On 20-Dec-2022: Follow up received contains significant information: Updated reporter details, events added and narrative updated.; Sender's Comments:  US-MODERNATX, INC.-MOD-2022-669791:Master Case US-MODERNATX, INC.-MOD-2022-689578:Master case (Cross linked) US-MODERNATX, INC.-MOD-2022-689487:Master case Same reporter US-MODERNATX, INC.-MOD-2022-689542:Master Case