The B.1.617 variant of the coronavirus first identified in India last year has been found in 44 countries, says the World Health Organization (WHO) which has classified it as a 'variant of concern'. The UN body routinely assesses if variants of SARS-CoV-2 result in changes in transmissibility and severity, or if they lead to changes in public health and social measures' implementation by national health authorities.
"As of May 11, over 4,500 sequences have been uploaded to GISAID and assigned to B.1.617 from 44 countries in all six WHO regions," the global health body said in its latest weekly epidemiological update published on Tuesday.
GISAID is a global science initiative and primary source that provides open access to genomic data of the novel coronavirus responsible for the COVID-19 pandemic. WHO has also characterized the lineage B.1.617 as a variant of concern (VOC). Variants of concern are those considered more dangerous than the original form of the virus first seen in China in late 2019.