November 4, 2021
Science
Public Health Institute (Oakland, CA)
“Abstract: We report SARS-CoV-2 vaccine effectiveness against infection (VE-I) and death (VE-D) by vaccine type (n = 780,225) in the Veterans Health Administration, covering 2.7% of the U.S. population. From February to October 2021, VE-I declined from 87.9% to 48.1%, and the decline was greatest for the Janssen vaccine resulting in a VE-I of 13.1%.”
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breakthrough cases,COVID-19,clinical cases,vaccines