The double mutant Covid variant, identified as B1617, which was first detected in India, has spread to 'at least 17 countries', the World Health Organization (WHO) has said.
The global health agency said in its weekly epidemiological update on the pandemic that - till April 27, B1617 variant had been detected in over 1,200 sequences uploaded on the open-access database GISAID (the Global Initiative on Sharing Avian Influenza Data) "from at least 17 countries.,
Most sequences were uploaded from India, the UK, US and Singapore, it said on Tuesday. GISAID was launched in 2016 as a database for sharing flu genomes.
Globally, new Covid-19 cases increased for the ninth consecutive week, with nearly 5.7 million new cases reported in the last week -- surpassing previous peaks, the WHO update said.
India accounts for "38 per cent of global cases reported in the past week," the report noted.
The B1617 variant has been deemed a 'variant of interest' instead of a 'variant of concern' by the WHO. However, the WHO has classified the British, South African and Brazilian variants of Covid-19 as "variants of concern." The B1617 variant was first detected in India on December 1, 2020. It contains mutations from two separate virus variants -- E484Q and L452R. The variant is partly held responsible for the second and massive resurgence of coronavirus in the country.
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