Pfizer jab 97 per cent effective against symptomatic Covid: Study – Times of India
Using data from January 17 to March 6 from Israel‘s national vaccination campaign, Pfizer-Biontech found that prevention against asymptomatic disease also reached 94 per cent.
An earlier real world study had showed effectiveness at preventing symptomatic disease at 94 per cent and asymptomatic illness at 92 per cent.