Director General of Indian Council for Medical Research (ICMR), Balram Bhargava said that Covishield and Covaxin work against Alpha, Beta, Gamma and Delta variants of SARS-CoV-2, while their effectiveness against the Delta plus variant is being tested.

Bhargava mentioned that the reduction of neutralisation capabilities of vaccines with different variants is based on global literature, which shows that Covaxin does not change with the Alpha variant at all and so it is same as it is with the standard strain