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WHO report highlights four SARS-CoV-2 variants – CGTN

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Four variants of the SARS-CoV-2 virus responsible for causing COVID-19 are circulating worldwide, said a report released by the World Health Organization (WHO) on Thursday.
A variant of the virus with a D614G substitution in the gene encoding the spike protein emerged in late January or early February 2020. The mutated virus replaced the initial SARS-CoV-2 strain by June 2020 and became dominant, said the report. This strain has increased infectivity and transmission but doesn’t cause more severe…

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