WHO to take call on emergency use listing of Covaxin in 4 to 6 weeks, says chief scientist The WHO is likely to take a decision on the inclusion of Bharat Biotech’s Covid-19 vaccine Covaxin in the emergency use list in the next four to six weeks, chief scientist Soumya Swaminathan said on Friday. advertisement UPDATED: July 11, 2021 09:52 IST The WHO is likely to take a decision on the inclusion of Bharat Biotech’s Covid-19 vaccine Covaxin in the emergency use list in the next four to six weeks. (Photo: PTI file) The World Health Organisation (WHO) is likely to take a call on whether to include Bharat Biotech’s Covid-19 vaccine Covaxin in the emergency use list (EUL) in the next four to six weeks, WHO chief scientist Soumya Swaminathan said.