MUMBAI, Jan. 15 -- The Serum Institute of India will send about 20 million doses of Covishield, the Oxford University-AstraZeneca Covid-19 vaccine, to the World Health Organization-backed COVAX initiative in February, and will raise this to 50 million per month from April, while simultaneously selling 30-40 million doses each month to India, its CEO Adar Poonawalla said on Thursday, adding that he expects WHO emergency use authorisation for the vaccine "in the next week or two".P9...