About The Study: In this case-control study of vaccine effectiveness, 2023-2024 COVID-19 vaccines were estimated to provide additional effectiveness against medically attended COVID-19, with the highest and most sustained estimates against critical illness. These results highlight the importance of receiving recommended COVID-19 vaccination for adults 18 years or older.
Corresponding Author: To contact the corresponding author, Ruth Link-Gelles, PhD, MPH, email hzt7@cdc.gov .
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(doi:10.1001/jamanetworkopen.2025.17402)
Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.
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