With time and without masks, COVID-19 vaccines wane in protection

https://www.eurekalert.org/news-releases/927207

News Release 2-Sep-2021

Study of highly vaccinated health workers found more contagious delta variant, combined with masking mandate end, was associated with increased breakthrough cases, paralleling exponential rise of COVID-19 infections in San Diego community
Peer-Reviewed Publication

University of California - San Diego


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