Effectiveness of COVID-19 vaccines in preventing SARS-CoV-2 infection among frontline workers before and during B. 1.617. 2 (Delta) variant predominance—eight US locations, December 2020–August 2021

Effectiveness of COVID-19 vaccines in preventing SARS-CoV-2 infection among frontline workers before and during B. 1.617. 2 (Delta) variant predominance—eight US locations, December 2020–August 2021
Fowlkes, A., Gaglani, M., Groover, K., Thiese, M.S., Tyner, H., Ellingson, K. and Cohorts, H.R., 2021. Morbidity and Mortality Weekly Report, 70(34), p.1167.
PubMed   DOI