no adverse event; Moderna monovalent vaccine was administered to approximately 20 patients instead of the Moderna bivalent booster; This spontaneous case was reported by a pharmacist and describes the occurrence of WRONG PRODUCT ADMINISTERED (Moderna monovalent vaccine was administered to approximately 20 patients instead of the Moderna bivalent booster) 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. AR6965B) for COVID-19 prophylaxis.     No Medical History information was reported.    In January 2023, the patient received dose of mRNA-1273 (Moderna COVID-19 Vaccine) (unknown route) 1 dosage form. On 11-Jan-2023, the patient experienced NO ADVERSE EVENT (no adverse event). In January 2023, the patient experienced WRONG PRODUCT ADMINISTERED (Moderna monovalent vaccine was administered to approximately 20 patients instead of the Moderna bivalent booster). At the time of the report, WRONG PRODUCT ADMINISTERED (Moderna monovalent vaccine was administered to approximately 20 patients instead of the Moderna bivalent booster) 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 assessment was provided for WRONG PRODUCT ADMINISTERED (Moderna monovalent vaccine was administered to approximately 20 patients instead of the Moderna bivalent booster).    This case contains information for the 1st of 20 adult patients described by the reporter.  Concomitant medications were not reported.  It was reported that Moderna monovalent vaccine was administered to approximately 20 patients from 11JAN2023 - 21JAN2023, instead of the Moderna bivalent booster. HCP wants to know if these patients can receive the Moderna bivalent booster shot after this incorrect dose, and how long should they wait to receive it.   Treatment information was not provided.   This case was linked to US-MODERNATX, INC.-MOD-2023-704443, US-MODERNATX, INC.-MOD-2023-704524, US-MODERNATX, INC.-MOD-2022-704541, US-MODERNATX, INC.-MOD-2023-704640, US-MODERNATX, INC.-MOD-2023-704666, US-MODERNATX, INC.-MOD-2023-704686, US-MODERNATX, INC.-MOD-2023-704726, US-MODERNATX, INC.-MOD-2023-704753, US-MODERNATX, INC.-MOD-2023-704763, US-MODERNATX, INC.-MOD-2023-704829, US-MODERNATX, INC.-MOD-2023-704845, US-MODERNATX, INC.-MOD-2022-704866, US-MODERNATX, INC.-MOD-2023-704875, US-MODERNATX, INC.-MOD-2022-704882, US-MODERNATX, INC.-MOD-2023-704885, US-MODERNATX, INC.-MOD-2023-704889, US-MODERNATX, INC.-MOD-2023-704891, US-MODERNATX, INC.-MOD-2023-704898, US-MODERNATX, INC.-MOD-2023-704900 (E2B Linked Report).   Most recent FOLLOW-UP information incorporated above includes: On 23-Jan-2023: Live follow-up included non significant information.; Sender's Comments:  US-MODERNATX, INC.-MOD-2023-704900:20 of 20 US-MODERNATX, INC.-MOD-2023-704726:08 of 20 US-MODERNATX, INC.-MOD-2022-704541:04 of 20 US-MODERNATX, INC.-MOD-2023-704845:12 of 20 US-MODERNATX, INC.-MOD-2023-704443:02 of 20 US-MODERNATX, INC.-MOD-2023-704889:17 of 20 US-MODERNATX, INC.-MOD-2023-704898:19 of 20 US-MODERNATX, INC.-MOD-2023-704686:07 of 20 US-MODERNATX, INC.-MOD-2023-704763:10 of 20 US-MODERNATX, INC.-MOD-2023-704829:11 of 20 US-MODERNATX, INC.-MOD-2023-704875:14 of 20 US-MODERNATX, INC.-MOD-2022-704866:13 of 20 US-MODERNATX, INC.-MOD-2023-704885:16 of 20 US-MODERNATX, INC.-MOD-2022-704882:15 of 20 US-MODERNATX, INC.-MOD-2023-704640:05 of 20 US-MODERNATX, INC.-MOD-2023-704891:18 of 20 US-MODERNATX, INC.-MOD-2023-704524:03 of 20 US-MODERNATX, INC.-MOD-2023-704666:06 of 20 US-MODERNATX, INC.-MOD-2023-704753:09 of 20