What The Study Did: This study examined the effectiveness of COVID-19 mRNA vaccines before and during the emergence of the Delta variant among older fully vaccinated male veterans.
Authors: Yinong Young-Xu, Sc.D., of the White River Junction Veterans Affairs Medical Center in White River Junction, Vermont, is the corresponding author.
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(doi:10.1001/jamanetworkopen.2021.38975)
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JAMA Network Open