No Adverse Event; 1st dose of Pfizer primary series on 19Jul2022, and on 22Nov2022 she accidentally received a Moderna COVID-19 Vaccine Bivalent booster; 1st dose of Pfizer primary series on 19Jul2022, and on 22Nov2022 she accidentally received a Moderna COVID-19 Vaccine Bivalent booster; accidentally received a Moderna COVID-19 Vaccine Bivalent booster instead of the 2nd dose of the primary series; This spontaneous case was reported by an other health care professional and describes the occurrence of COVID-19 IMMUNISATION (1st dose of Pfizer primary series on 19Jul2022, and on 22Nov2022 she accidentally received a Moderna COVID-19 Vaccine Bivalent booster), INTERCHANGE OF VACCINE PRODUCTS (1st dose of Pfizer primary series on 19Jul2022, and on 22Nov2022 she accidentally received a Moderna COVID-19 Vaccine Bivalent booster), WRONG PRODUCT ADMINISTERED (accidentally received a Moderna COVID-19 Vaccine Bivalent booster instead of the 2nd dose of the primary series) and NO ADVERSE EVENT (No Adverse Event) in a 38-year-old female patient who received mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (batch no. ASKU) for COVID-19 prophylaxis.     Patient had no relevant medical conditions.  Previously administered products included for COVID-19 prophylaxis: Pfizer (Dose 1) on 19-Jul-2022. Past adverse reactions to the above products included No adverse event with Pfizer.    On 22-Nov-2022, the patient received second dose of mRNA-1273 BIVALENT .222 (MODERNA COVID-19 VACCINE, BIVALENT (ORIGINAL AND OMICRON BA.4/BA.5)) (unknown route) .5 milliliter. On 22-Nov-2022, the patient experienced COVID-19 IMMUNISATION (1st dose of Pfizer primary series on 19Jul2022, and on 22Nov2022 she accidentally received a Moderna COVID-19 Vaccine Bivalent booster), INTERCHANGE OF VACCINE PRODUCTS (1st dose of Pfizer primary series on 19Jul2022, and on 22Nov2022 she accidentally received a Moderna COVID-19 Vaccine Bivalent booster) and WRONG PRODUCT ADMINISTERED (accidentally received a Moderna COVID-19 Vaccine Bivalent booster instead of the 2nd dose of the primary series). On an unknown date, the patient experienced NO ADVERSE EVENT (No Adverse Event). At the time of the report, COVID-19 IMMUNISATION (1st dose of Pfizer primary series on 19Jul2022, and on 22Nov2022 she accidentally received a Moderna COVID-19 Vaccine Bivalent booster), INTERCHANGE OF VACCINE PRODUCTS (1st dose of Pfizer primary series on 19Jul2022, and on 22Nov2022 she accidentally received a Moderna COVID-19 Vaccine Bivalent booster), WRONG PRODUCT ADMINISTERED (accidentally received a Moderna COVID-19 Vaccine Bivalent booster instead of the 2nd dose of the primary series) 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 COVID-19 IMMUNISATION (1st dose of Pfizer primary series on 19Jul2022, and on 22Nov2022 she accidentally received a Moderna COVID-19 Vaccine Bivalent booster), INTERCHANGE OF VACCINE PRODUCTS (1st dose of Pfizer primary series on 19Jul2022, and on 22Nov2022 she accidentally received a Moderna COVID-19 Vaccine Bivalent booster) and WRONG PRODUCT ADMINISTERED (accidentally received a Moderna COVID-19 Vaccine Bivalent booster instead of the 2nd dose of the primary series).    No concomitant drug information was provided.   Patient had not received any other vaccines in the 4 weeks prior to COVID-19 vaccine.  It was reported that the patient had accidently received dose 2 of Moderna bivalent booster instead of primary series dose of Pfizer.  No treatment drug information was provided.