 "A medic collects a swab sample of a migrant after arriving from Chennai via 'Shramik Special' train, during the ongoing COVID-19 nationwide lockdown, at Nehrubali in Nagaon District. Photo: PTI")
With the Covid-19 cases zipping past five million people globally last week and rocketing towards six million, the search for a vaccine and a therapy has become more and more urgent.
Some statisticians say the case count could be at least 5 to 20 times higher due to inconsistencies and variations in testing and testing protocols in different countries. A paper published by the Imperial College London estimated that the number of people infected by Covid-19 in the UK as of March 30 was between 800,000 to 3.7 million. The official case count then was just 22,141. Even the more conservative
