WORLDBharat Biotech Updates Covaxin Efficacy to 65.2%Neha VermaNovember 25, 2021November 25, 2021 by Neha VermaNovember 25, 2021November 25, 202101047 Bharat Biotech has updated the efficacy of Covaxin to 65.2 per cent against the Delta variant in Effectiveness Study on Delta Variant Lancet Infectious Diseases,...