Two doses of Covid vaccine were successful in preventing 95% deaths due to Covid-19 during the second wave, whereas deaths were lower by 82% among those inoculated with one dose, the government said citing a study conducted by the Indian Council of Medical Research (ICMR) among more than 1.2 lakh police personnel, who were at high risk of infection, in Tamil Nadu.
The study also assumes significance as it was conducted during the second wave which was mostly driven by the spread of Delta variant, implying that the vaccine is effective against the variant that has been found to be highly transmissible as well as virulent, resulting in large number of deaths during the second wave.