US doctor says AstraZeneca vaccine only 33-60% effective against Delta variant. Why it matters in India

American scientist Eric Feigl-Ding said the two doses of AstraZeneca vaccine or Covishield can offer only 60 per cent protection against the Delta variant, which the World Health Organisation earlier this week reported to be the most dominant variant of SARS-CoV-2.

Eminent health expert and American scientist Eric Feigl-Ding has said in a series of tweets that AstraZeneca vaccine may have limited effectiveness against the Delta variant of SARS-CoV-2, the coronavirus that causes Covid-19. 4) But efficacy of AZ against #DeltaVariant is not 90% (it’s 60%), Pfizer is 88% in one non-trial study. However, 1 dose of vaccine (both types averaged) is just 33%. And many countries are just 1 dose vaccinated. https://t.co/7tDbLO3I1z 10% of all #COVID19 hospitalizations last week were among fully vaccinated, despite >50% adults fully vaccinated in the UK— this is the #DeltaVariant, which is 99% of all cases. I’m a big 2-dose vaccine advocate—but we still need strong precaution.https://t.co/zeelo0BLhv pic.twitter.com/0W1WHXagrQ Citing a study, Eric Feigl-Ding said, “The efficacy of AZ [AstraZeneca vaccine] against Delta variant is not 90% (it’s 60%), Pfizer is 88% in one non-trial study. However, 1 dose of vaccine (both types averaged) is just 33%. And many countries are just 1 dose vaccinated.”