A study by Indian SARS-CoV-2 Consortium on Genomics (INSACOG) said the Delta variant, first found in India, is the “primary cause” behind the second Covid-19 wave. “B.1.617 variant & its lineage B.1.617.2 were primarily responsible for surge in cases with high transmissibility of 50% more than Alpha variant (B.1.1.7),” said the study. INSACOG is a grouping of 10 National Laboratories established by the ministry of health and family welfare last year. It has been carrying out genomic sequencing and analysis of circulating Covid-19 viruses, and correlating epidemiological trends with genomic variants. Genomic variants of various viruses are a natural phenomenon and are found in almost all countries. The WHO on Monday announced that Covid-19 variants will now be known by letters of the Greek alphabet to avoid stigmatising nations where they were first detected.
Jun 04, 2021, 05:53PM ISTSource: TOI.in