"90 per cent of cases in India are being driven by B.1.617.2 (Delta) variant," the said.
The government said that both 19 vaccines -- Covishield and Covaxin -- work against variants of the SARS-CoV-2 --- Alpha, Beta, Gamma and Delta.
When it came to the Delta plus variant, the government said that laboratory testing is going on to determine the vaccine efficacy.
On the issue of vaccinating children, ICMR chief Balram Bhargava said that more data is needed before moving to inoculate kids.
There is only one country that is giving vaccine to children at the moment. Whether very small children will ever need vaccine, is still a question. Till such time, we have more data on vaccination of children, we won't be in a position to vaccinate them at large, he said.