Covid update: India blocks vaccine export; how Delhi will guard vaccines

From India controlling the export of vaccines manufactured in the country, to details of Delhi's security plan for vaccine storage centres - here are the top news updates on the Covid-19 pandemic. CEO of Serum Institute of India, which is producing the Oxford-AstraZeneca vaccine in India, said that regulators approved the inoculant for emergency use on the condition that it isn't exported initially. Adar Poonawalla said that SII would sell 10 crore doses to the Indian government at a price of Rs 200 each, and the cost will rise subsequently. Meanwhile, the Tamil Nadu government lifted the 50% seating cap in theatres, allowing full capacity. In international news, UK scientists are worried that existing vaccines may not be effective against a new virus variant found in South Africa and spreading to other countries. Watch the full video for the other updates on the spread of the Sars-CoV-2 coronavirus.