India's drug regulator has approved ZyCoV-D, world's first DNA vaccine against Covid-19 for emergency use. In an interim study done by the vaccine maker Cadila Healthcare, the three-dose vaccine prevented symptomatic disease in 66% of those vaccinated. The firm plans to make up to 120 million doses of ZyCov-D. Watch to know more about this India's second home-grown vaccine after Covaxin.
