SARS-CoV-2 Lambda variant
Variant of SARS-CoV-2 From Wikipedia, the free encyclopedia
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] On 16 March 2022, the WHO has de-escalated the Lambda variant to "previously circulating variants of concern".[4][5]
It has spread to at least 30 countries[6] around the world and is known to be more resistant to neutralizing antibodies compared to other strains.[7][8][9] There is evidence that suggests the Lambda variant is both more infectious and resistant to vaccines than the Alpha and/or Gamma variant.[10][11]
Mutations
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.[12]
Amino acid mutations of SARS-CoV-2 Lambda variant plotted on a genome map of SARS-CoV-2 with a focus on the spike.[13]
History
Summarize
Perspective
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][14] 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.[15] 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.[14][16] 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.[17]
On 19 July 2021, Texas reported its first case of the Lambda variant.[18] On 22 July 2021, Florida reported 126 cumulative confirmed cases of the Lambda variant.[19] 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.[20] On 5 August 2021, Louisiana reported its first case of the Lambda variant.[21]
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.[22]
On 15 August 2021, the Philippines confirmed its first case of the Lambda variant.[23]
Statistics
| Country | Confirmed cases | Collection date |
|---|---|---|
 Chile |
1,489 | 13 July 2021 |
 Peru |
1,480 | 15 June 2021 |
 United States |
848 | 5 August 2021 |
 Ecuador |
194 | 20 July 2021 |
 Mexico |
189 | 14 July 2021 |
 Spain |
124 | 7 July 2021 |
 Argentina |
111 | 24 June 2021 |
 Germany |
87 | 13 July 2021 |
 France |
56 | 19 July 2021 |
 Colombia |
51 | 29 June 2021 |
 Israel |
25 | 9 May 2021 |
 Switzerland |
8 | 25 July 2021 |
 Canada |
26 | 21 June 2021 |
 The Netherlands |
3 | 11 July 2021 |
 Saint Kitts and Nevis |
10 | 6 June 2021 |
 Belgium |
2 | 23 July 2021 |
 United Kingdom |
8 | 10 July 2021 |
 Italy |
12 | 26 June 2021 |
 Brazil |
7 | 21 June 2021 |
 India |
6 | 12 April 2021 |
 Denmark |
1 | 11 August 2021 |
 Sweden |
1 | 15 July 2021 |
 South Africa |
3 | 14 July 2021 |
 Portugal |
1 | 10 June 2021 |
 Qatar |
3 | 13 April 2021 |
 Latvia |
2 | 30 April 2021 |
 Aruba |
2 | 2 June 2021 |
 Bolivia |
1 | 2 June 2021 |
 Uruguay |
1 | 15 April 2021 |
 Australia |
1 | 3 April 2021 |
 Lithuania |
1 | 19 May 2021 |
 Norway |
1 | 7 July 2021 |
 Estonia |
1 | 1 April 2021 |
 Russia |
1 | 21 March 2021 |
 Finland |
1 | 31 May 2021 |
 Turkey |
1 | 8 February 2021 |
 Bangladesh |
1 | 20 March 2021 |
 Japan |
1 | 7 August 2021 |
 Philippines |
1 | 15 August 2021[25] |
 Venezuela |
2 | 5 May 2021 |
| Mayotte |
1 | 15 July 2021 |
 El Salvador |
3 | 30 April 2021 |
 Guatemala |
1 | 3 July 2021 |
 Costa Rica |
4 | 20 July 2021 |
| World (44 countries) | Total: 4,763 | Total as of 23 August 2021 |
See also
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References
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