Covid-19 doubling time improves to 15.4 days: Health ministry

The doubling time of coronavirus cases in India has improved to 15.4 days from 13.3 days, the Union health ministry said on Saturday, as the country's Covid-19 death toll climbed to 4,971 and the total cases rose to 1,73,763. The doubling time improved during the past three days, it said.