"Once Delta became the dominant strain, VE went from 91% to 78% against COVID-19 infection, 92% to 90% against hospitalization, and 94% to 91% against death."[1

"Once Delta became the dominant strain, VE went from 91% to 78% against COVID-19 infection, 92% to 90% against hospitalization, and 94% to 91% against death."[1] [1] https://www.cidrap.umn.edu/news-perspective/2021/09/covid-19-vaccines-protect-against-severe-illness-during-delta https://www.cidrap.umn.edu/news-perspective/2021/09/covid-19...