Sars COV 2 that emerged from the wet market of wuhan clinched the world with electrifying speed. Mankind has never bowed down to any natural calamity without strong fight to certain extent The culprit being a virus ,even the latest antibiotics were of no help. Scientists and pharma companies came to rescue the mankind by manufacturing various vaccines to combat the spread of COVID 19 and provide immunity against the possible exposure to infective virus .Various vaccines like Inactivated virus vaccines, recombinant viral vaccines, subunit vaccines, DNA vaccines, and attenuated vaccinations were all tried to find out effective vaccine against sars cov virus. In india government took up the task of vaccinating the population free of cost. After testing the efficacy of various available vaccines covishield was selected for the mass vaccination programme.