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The Lambda variant, also known as lineage C.37, is a variant of SARS-CoV-2, the virus that causes COVID-19.[1] It was first detected in Peru in August 2020.[2] On 14 June 2021, the World Health Organization (WHO) named it Lambda variant[1] and designated it as a variant of interest.[3] It has spread to at least 30 countries[4] around the world and is known to be more resistant to neutralizing antibodies compared to other strains.[5][6][7] There is evidence that suggests the Lambda variant is both more infectious and resistant to vaccines than the Alpha and/or Gamma variant.[8][9]
Lambda has been associated with substantive rates of community transmission in multiple countries, with rising prevalence over time concurrent with increased COVID-19 incidence. The earliest sequenced samples were reported from Peru in August 2020.
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