As India prepares for the world's largest coronavirus vaccination programme, Prime Minister Narendra Modi will hold a meeting today with Chief Ministers on the rollout, which begins across the country on Saturday. This will be PM Modi's first meeting with the Chief Ministers after two vaccines - Bharat Biotech's Covaxin and Pune based-Serum Institute of India's Covishield - were cleared for emergency use by the drug regulator DCGI last week.