The<unk>  variant, also known as lineage B.1.621 or VUI-21JUL-1, is one of the variants of SARS-CoV-2, the virus that causes COVID-19. It was first detected in Colombia in January 2021 and was designated by the WHO as a variant of interest on August 30, 2021. The WHO said the variant has<unk> tations that indicate a risk of resistance to the current vaccines and stressed that further studies were needed to better understand it. Outbreaks of the<unk>  variant were reported in South America and Europe. The B.1.621 lineage has a sublineage, labeled B.1.621.1 under the PANGO nomenclature, which has already been detected in more than 20 countries worldwide. Under the simplified naming scheme proposed by the World Health Organization, B.1.621 was labeled "Mu variant", and was considered a variant of interest (VOI), but not a variant of concern.
SARS-CoV-2 Mu variant
SARS-CoV-2 Omicron variant
SARS-CoV-2 Delta variant
SARS-CoV-2 Gamma variant
SARS-CoV-2 Alpha variant
SARS-CoV-2 Epsilon variant
SARS-CoV-2 Lambda variant
SARS-CoV-2 Kappa variant