Vaccines -

MMWR Booster for: Effectiveness of Monovalent mRNA Vaccines Against COVID-19–Associated Hospitalization Among Immunocompetent Adults During BA.1/BA.2 and BA.4/BA.5 Predominant Periods of SARS-CoV-2 Omicron Variant in the United States — IVY Network, 18 States, December 26, 2021–August 31, 2022, Weekly / October 21, 2022 / 71(42);1327–1334

Posted on January 24, 2024 by Cody Micah Carmichael MPH, CPH

Top 5 Takeaways Effectiveness of Monovalent mRNA Vaccines: During the SARS-CoV-2 Omicron BA.1/BA.2 and BA.4/BA.5 periods, the effectiveness of three-dose monovalent mRNA vaccines against COVID-19–associated hospitalization waned over time. Vaccine