Applications for the emergency use approval for the coronavirus vaccines filed by the Serum Institute of India, Bharat Biotech and Pfizer are being examined by a government-appointed panel of experts. The UK government has changed its Covid vaccination strategy, saying the second doses of both Oxford-AstraZeneca and Pfizer-BioNTech vaccine would now be given up to 12 weeks after the first dose. Will India and other countries follow suit?