AstraZeneca Covid vax

British-Swedish pharmaceutical major AstraZeneca on Monday said its vaccine demonstrated efficacy of 79 per cent at preventing symptomatic Covid-19 and 100 per cent efficacy at preventing severe disease and hospitalisation in a phase-3…

Even as severe supply constraints remain the biggest concern for many nations trying to accelerate the vaccine drive against Covid-19, tens of millions of AstraZeneca doses are lying idle in US manufacturing facilities.This is because…