Kulkarni, 2021 CTRI/2020/08/027170
Covishield (Oxford/AZ formulation) (n=1200) vs. placebo (n=300)
randomized controlled trial
risk of bias NA
SII-ChAdOx1 nCoV-19
Two doses of vaccine at a dosing interval of 4 ( 2) weeks
placebo
COVID-19 prophylaxis (excluding children)
double-blind
14 hospitals across India