PMID- 38411838 OWN - NLM STAT- MEDLINE DCOM- 20240417 LR - 20240418 IS - 1179-1942 (Electronic) IS - 0114-5916 (Linking) VI - 47 IP - 5 DP - 2024 May TI - Safety of Simultaneous Administration of Bivalent mRNA COVID-19 and Influenza Vaccines in the Vaccine Adverse Event Reporting System (VAERS). PG - 487-493 LID - 10.1007/s40264-024-01406-8 [doi] AB - INTRODUCTION: Bivalent mRNA coronavirus disease 2019 (COVID-19) vaccines may be simultaneously administered with other recommended vaccines, including seasonal influenza vaccines. However, few studies have evaluated the safety of co-administration of bivalent mRNA COVID-19 and seasonal influenza vaccines. OBJECTIVE: The aim was to describe reports to the Vaccine Adverse Event Reporting System (VAERS) after co-administration of bivalent mRNA COVID-19 and seasonal influenza vaccines. METHODS: We searched the VAERS database for reports of adverse events (AEs) following co-administration of bivalent mRNA COVID-19 and seasonal influenza vaccines during the period of September 1, 2022-March 31, 2023. We assessed the characteristics of these reports and described the most frequently reported AEs. Clinicians reviewed available medical records for reports of serious AEs and adverse events of special interest (AESI). RESULTS: During the period of 1 September 2022 through 31 March 2023, VAERS received 3689 reports of AEs following co-administration of bivalent mRNA COVID-19 and seasonal influenza vaccines. The median age of vaccinees was 59 years (interquartile range 39, 70 years); 342 reports (9.3%) were classified as serious. The most common AEs among non-serious reports were severe-acute-respiratory-syndrome-related coronavirus (SARS-CoV-2) infection (785, 23.5%), cough (592, 17.7%), and fatigue (568, 17.0%). The most common AEs among serious reports were Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection (88, 25.7%), dyspnea (81, 23.7%), and condition aggravated (55, 16.1%). DISCUSSION: Reports of AEs following co-administration of bivalent mRNA COVID-19 and seasonal influenza vaccines did not reveal any unusual or unexpected patterns of AEs. Increased reporting of certain events (e.g., COVID-19) was expected due to Food and Drug Administration (FDA) and Centers for Disease Control and Prevention (CDC) reporting requirements. CDC and FDA will continue to monitor the safety of co-administration of mRNA COVID-19 and seasonal influenza vaccines. CI - (c) 2024. This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply. FAU - Moro, Pedro L AU - Moro PL AD - Immunization Safety Office, Division of Healthcare Quality Promotion, NCEZID, Centers for Disease Control and Prevention, 1600 Clifton Rd, MS V18-4, Atlanta, GA, 30329-4027, USA. pmoro@cdc.gov. FAU - Ennulat, Carol AU - Ennulat C AD - Immunization Safety Office, Division of Healthcare Quality Promotion, NCEZID, Centers for Disease Control and Prevention, 1600 Clifton Rd, MS V18-4, Atlanta, GA, 30329-4027, USA. FAU - Brown, Hannah AU - Brown H AD - Immunization Safety Office, Division of Healthcare Quality Promotion, NCEZID, Centers for Disease Control and Prevention, 1600 Clifton Rd, MS V18-4, Atlanta, GA, 30329-4027, USA. FAU - Woody, Gina AU - Woody G AD - Immunization Safety Office, Division of Healthcare Quality Promotion, NCEZID, Centers for Disease Control and Prevention, 1600 Clifton Rd, MS V18-4, Atlanta, GA, 30329-4027, USA. FAU - Zhang, Bicheng AU - Zhang B AD - Immunization Safety Office, Division of Healthcare Quality Promotion, NCEZID, Centers for Disease Control and Prevention, 1600 Clifton Rd, MS V18-4, Atlanta, GA, 30329-4027, USA. FAU - Marquez, Paige AU - Marquez P AD - Immunization Safety Office, Division of Healthcare Quality Promotion, NCEZID, Centers for Disease Control and Prevention, 1600 Clifton Rd, MS V18-4, Atlanta, GA, 30329-4027, USA. FAU - Woo, Emily Jane AU - Woo EJ AD - Center for Biologics Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Ave, Silver Spring, MD, 20993, USA. FAU - Su, John R AU - Su JR AD - Immunization Safety Office, Division of Healthcare Quality Promotion, NCEZID, Centers for Disease Control and Prevention, 1600 Clifton Rd, MS V18-4, Atlanta, GA, 30329-4027, USA. LA - eng PT - Journal Article DEP - 20240227 PL - New Zealand TA - Drug Saf JT - Drug safety JID - 9002928 RN - 0 (COVID-19 Vaccines) RN - 0 (Influenza Vaccines) RN - 0 (RNA, Messenger) SB - IM MH - Humans MH - Adverse Drug Reaction Reporting Systems MH - *COVID-19/prevention & control MH - COVID-19 Vaccines/adverse effects MH - *Influenza Vaccines/adverse effects MH - RNA, Messenger MH - SARS-CoV-2 MH - United States MH - Adult MH - Middle Aged MH - Aged EDAT- 2024/02/27 12:45 MHDA- 2024/04/17 06:42 CRDT- 2024/02/27 11:12 PHST- 2024/02/04 00:00 [accepted] PHST- 2024/04/17 06:42 [medline] PHST- 2024/02/27 12:45 [pubmed] PHST- 2024/02/27 11:12 [entrez] AID - 10.1007/s40264-024-01406-8 [pii] AID - 10.1007/s40264-024-01406-8 [doi] PST - ppublish SO - Drug Saf. 2024 May;47(5):487-493. doi: 10.1007/s40264-024-01406-8. Epub 2024 Feb 27.