Bharat Biotech announced that its COVID-19 vaccine, Covaxin, showed point estimate efficacy of 78% (95% confidence interval: 61-88) against mild, moderate, and severe disease. This compares with 81% reported in the first interim analysis. (Also see "Bharat Biotech Gets Shot In Arm With 81% Efficacy For COVID-19 Vaccine" - Scrip, 4 March, 2021.)
However, efficacy against severe disease was 100% (95% confidence interval: 60-100), with an impact on reduction in hospitalizations. The efficacy...







