B.1.617 variant of SARS-CoV2 has sub-lineages; B.617.2 more infectious: Expert on COVID mutations in India Nation B.1.617 variant of SARS-CoV2 has sub-lineages; B.617.2 more infectious: Expert on COVID mutations in India News Analysis India 3 years ago By PTI NEW DELHI: The double mutant B.1.617 variant of SARS-CoV2 is further mutating and one of its sub-lineages, the B.1.617.2, reported in India,...Read More