The vast majority of mutations did not materially alter either the virus's virulence or transmissibility.
Prime Minister Narendra Modi will meet chief ministers of all states on Monday to discuss plans on the Covid-19 vaccine roll out and the pandemic situation across the country.
German company BioNTech said Friday a preliminary study shows that its vaccine works against the key mutation in coronavirus variants uncovered in Britain and South Africa which experts have said is more contagious than the original Covid-19 strain.
At least 22 students, two teachers and a peon were found to be Covid-19 positive when 75 persons were randomly tested for coronavirus in Bihar’s Munger district.
The Health Department has sounded an alert and ordered closure of the school, while asking the authorities to conduct more such tests among the children as well as teachers. The district administration has issued orders for contact tracing too.
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Over 1.1 million people had Covid-19 last week, equivalent to 1 in 50 people in the nation, the UK's Office for National Statistics said on Friday, rising to 1 in 30 people in the capital London as a contagious variant spreads.