WORLDBharat Biotech Updates Covaxin Efficacy to 65.2%adminNovember 25, 2021November 25, 2021 November 25, 2021November 25, 2021 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,...