Sunday, July 25

pfizer vaccine

AstraZeneca, coronavirus, COVID-19 vaccine, delta variant, pfizer vaccine, Public Health, Science

Pfizer’s COVID-19 vaccine works very well against the Delta variant — but only after 2 doses

A UK study suggests two-dose Pfizer and AstraZeneca vaccines work well against Delta infections. After one shot, the vaccines were only 30% to 36% effective against symptomatic Delta infections. But with two shots, Pfizer's and AstraZeneca's vaccines were 88% and 67% effective, respectively. LoadingSomething is loading. A study of more than 19,...