About The Study: To assess the effectiveness of COVID-19 prevention measures in New York City public schools against the Delta variant, this study measured the secondary attack rate for COVID-19 cases diagnosed in students, teachers and staff from October to December 2021 and analyzed the likely direction of transmission for secondary cases, stratified by vaccination status.
Authors: Jay K. Varma, M.D., of Weill Cornell Medicine in New York, is the corresponding author.
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(doi:10.1001/jamanetworkopen.2022.13276)
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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