SARS-CoV-2 Delta variant
Variant of SARS-CoV-2, the virus that causes COVID-19
SARS-CoV-2 Delta variant, also known as B.1.617.2, is a variant of the B.1.617 lineage of SARS-CoV-2, the virus that causes COVID-19. It was termed Delta variant by WHO under a new naming system introduced on 31 May 2021. It was first detected in India in late 2020.