PMID- 38462432 OWN - NLM STAT- MEDLINE DCOM- 20240408 LR - 20240408 IS - 1873-2518 (Electronic) IS - 0264-410X (Linking) VI - 42 IP - 9 DP - 2024 Apr 2 TI - Safety monitoring of bivalent mRNA COVID-19 vaccine among pregnant persons in the vaccine adverse event reporting System - United States, September 1, 2022 - March 31, 2023. PG - 2380-2384 LID - S0264-410X(24)00262-7 [pii] LID - 10.1016/j.vaccine.2024.02.084 [doi] AB - BACKGROUND: Pregnant persons are at increased risk of severe COVID-19 illness. Bivalent mRNA COVID-19 vaccination is recommended for everyone, including pregnant persons. However, data are limited on the safety of bivalent mRNA COVID-19 vaccination during pregnancy. OBJECTIVE: To evaluate and summarize reports to the Vaccine Adverse Event Reporting System (VAERS), a national spontaneous reporting system, among pregnant persons who received bivalent mRNA COVID-19 vaccine. METHODS: VAERS U.S. reports of adverse events (AEs) in pregnant persons who received the bivalent mRNA COVID-19 vaccine from 9/1/2022-03/31/2023 were identified. Clinicians reviewed all reports and available medical records. AEs of these reports were compared with AEs reported to VAERS following monovalent mRNA COVID-19 booster vaccination in pregnancy. RESULTS: VAERS received 136 reports for pregnant persons who received bivalent mRNA COVID-19 vaccine; 87 (64 %) after BNT162b2 (Pfizer-BioNTech), and 48 (35 %) after mRNA-1273 (Moderna); 28 (20.6 %) reports were classified as serious. The most common pregnancy-specific outcomes reported included 12 (8.8 %) spontaneous abortions (<20 weeks gestation), 6 (4.4 %) episodes of preterm delivery, and 5 (3.7 %) reports of preeclampsia. One stillbirth (>/=20 weeks gestation) was reported. No maternal or infant deaths were reported. There were 6 reports of AEs in infants, which included 3 reports of admissions to the neonatal intensive care unit: two infants with low birth weight, and one infant with a patent ductus arteriosus and patent foramen ovale. Non-pregnancy-specific adverse events were mostly COVID-19 infection and systemic reactions (e.g., headache, fatigue). Pregnancy-specific conditions were reported less frequently after bivalent mRNA COVID-19 vaccination compared to monovalent mRNA COVID-19 booster vaccination (3rd and 4th dose). CONCLUSIONS: Based on this review of reports to VAERS, the safety profile of bivalent mRNA COVID-19 vaccination in pregnant persons was comparable to that observed for monovalent mRNA COVID-19 booster vaccination (3rd and 4th dose) in pregnant persons. CI - Published by Elsevier Ltd. FAU - Moro, Pedro L AU - Moro PL AD - Immunization Safety Office, Division of Healthcare Quality Promotion, National Center for Zoonotic and Emerging Infectious Diseases, USA. Electronic address: psm9@cdc.gov. FAU - Carlock, Grace AU - Carlock G AD - Immunization Safety Office, Division of Healthcare Quality Promotion, National Center for Zoonotic and Emerging Infectious Diseases, USA. FAU - Fifadara, Nimita AU - Fifadara N AD - Immunization Safety Office, Division of Healthcare Quality Promotion, National Center for Zoonotic and Emerging Infectious Diseases, USA. FAU - Habenicht, Tei AU - Habenicht T AD - Immunization Safety Office, Division of Healthcare Quality Promotion, National Center for Zoonotic and Emerging Infectious Diseases, USA. FAU - Zhang, Bicheng AU - Zhang B AD - Immunization Safety Office, Division of Healthcare Quality Promotion, National Center for Zoonotic and Emerging Infectious Diseases, USA. FAU - Strid, Penelope AU - Strid P AD - Preparedness and Response Branch, Division of Healthcare Quality Promotion, National Center for Zoonotic and Emerging Infectious Diseases, USA. FAU - Marquez, Paige AU - Marquez P AD - Immunization Safety Office, Division of Healthcare Quality Promotion, National Center for Zoonotic and Emerging Infectious Diseases, USA. LA - eng PT - Journal Article PT - Review DEP - 20240311 PL - Netherlands TA - Vaccine JT - Vaccine JID - 8406899 RN - 0 (BNT162 Vaccine) RN - 0 (COVID-19 Vaccines) RN - 0 (Vaccines) SB - IM MH - Female MH - Humans MH - Infant, Newborn MH - Pregnancy MH - Adverse Drug Reaction Reporting Systems MH - BNT162 Vaccine MH - *COVID-19/prevention & control MH - COVID-19 Vaccines/adverse effects MH - United States/epidemiology MH - *Vaccines OTO - NOTNLM OT - Adverse events OT - BA.4/BA.5 strains OT - Bivalent mRNA COVID-19 vaccine OT - COVID-19 OT - Coronavirus OT - Epidemiology OT - Pregnancy OT - SARS-CoV-2 OT - Surveillance OT - Vaccine safety OT - mRNA COVID-19 vaccines COIS- Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2024/03/11 00:42 MHDA- 2024/04/08 06:42 CRDT- 2024/03/10 22:54 PHST- 2023/09/25 00:00 [received] PHST- 2024/02/04 00:00 [revised] PHST- 2024/02/27 00:00 [accepted] PHST- 2024/04/08 06:42 [medline] PHST- 2024/03/11 00:42 [pubmed] PHST- 2024/03/10 22:54 [entrez] AID - S0264-410X(24)00262-7 [pii] AID - 10.1016/j.vaccine.2024.02.084 [doi] PST - ppublish SO - Vaccine. 2024 Apr 2;42(9):2380-2384. doi: 10.1016/j.vaccine.2024.02.084. Epub 2024 Mar 11.