Read more about Only one of three strains of B.1.617 coronavirus variant now a concern: WHO on Business Standard. WHO has said only B.1.617.2, one of the three strains of the B.1.617 COVID-19 variant first detected in India, is a variant of concern now
WHO said that available findings for lineages B.1.617.1 and B.1.617.2 were initially used to designate B.1.617 a global Variant of Concern (VOC) on May 11 this year.