vaccination, experts said on Monday noting that the immunity afforded by the presence of antibodies might be expected to last only several months.The experts -- Rajeeva Karandikar from the Chennai Mathematical Institute; Shekhar Mande, Director General, CSIR; and M Vidyasagar from IIT Hyderabad -- said it is crucial to ensure that the number of cases does not start increasing again as it has in many countries such as Italy, the UK, and the USA.
They said according to both serological surveys as well as model predictions, a substantial fraction of India's population currently has immunity against the virus, coupled perhaps with some natural form of immunity. Also Read | India Inc gears up to go back to office“Although the current evidence is.