SARS-CoV-2 Lambda variant

The Lambda genome has the following amino acid mutations, all of which are in the virus's spike protein code: G75V, T76I, Δ246-252, L452Q, F490S, D614G and T859N.^[10]

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  Amino acid mutations of SARS-CoV-2 Lambda variant plotted on a genome map of SARS-CoV-2 with a focus on the spike.^[11]

First samples of the Lambda variant were detected in Peru in August 2020^[2] and by April 2021, over eighty percent of new cases of COVID-19 in Peru were from the new variant.^[1][12] In mid-June 2021, 90.6% of new COVID-19 cases in Arequipa and 78.1% of new cases in Cusco were the Lambda variant, according to the Peruvian Ministry of Health.^[13] By this time the Lambda variant had also spread throughout South America and was detected in twenty-nine countries in total, especially in Argentina, Chile and Ecuador.^[12][14] The WHO designated the Lambda variant as a "variant of interest" on 14 June 2021.^[1]

On 6 July 2021, Australia reported its first case of the Lambda variant in an overseas traveler who had been in a New South Wales quarantine hotel in April.^[15]

On 19 July 2021, Texas reported its first case of the Lambda variant.^[16] On 22 July 2021, Florida reported 126 cumulative confirmed cases of the Lambda variant.^[17] On 28 July 2021, University of Miami researchers announced random sampling showed 3 percent of COVID-19 patients in Jackson Memorial Health System and at University of Miami's UHealth Tower were infected with it.^[18] On 5 August 2021, Louisiana reported its first case of the Lambda variant.^[19]

On 7 August 2021, Japan confirmed its first case of the Lambda variant, with the infected person arriving in Japan from Peru on 20 July.^[20]

On 15 August 2021, the Philippines confirmed its first case of the Lambda variant.^[21]

• Variants of SARS-CoV-2: Alpha, Beta, Gamma, Delta, Epsilon, Zeta, Eta, Theta, Iota, Kappa, Mu, Omicron