SARS-CoV-2 Eta variant

Bambancin Eta wani nau'in SARS-CoV-2, kwayar cutar da ke haifar da COVID-19 . Bambancin Eta ko jinsi B.1.525, wanda kuma ake kira VUI -21FEB-03 (a baya VUI-202102/03 ) ta Public Health England (PHE) kuma wacce aka fi sani da UK1188, 21D ko 20A/S: 484K, baya ɗaukar guda ɗaya Canjin N501Y da aka samu a cikin Alpha, Beta da Gamma, amma yana ɗauke da maye gurbin E484K ɗaya kamar yadda aka samu a cikin bambance-bambancen Gamma, Zeta, da Beta, kuma yana ɗauke da ΔH69/ΔV70 iri ɗaya (sharewar amino acid histidine da valine a matsayi 69 da 70) kamar yadda aka samo a cikin Alpha, N439K bambance -bambancen (B.1.141 da B.1.258) da bambance -bambancen Y453F ( Cluster 5 ).^[1]

Eta ya bambanta da duk sauran bambance-bambancen ta hanyar samun duka E484K-maye gurbi da sabon maye gurbin F888L (maye gurbin phenylalanine (F) tare da leucine (L) a cikin yankin S2 na furotin mai haɓaka ). Tun daga 5 ga Maris 2021, an gano ta a cikin ƙasashe 23.^[2][3][4] An kuma ba da rahoto a Mayotte, sashin/yankin ƙasashen waje na Faransa .^[2] An gano shari'o'in farko a watan Disamba 2020 a Burtaniya da Najeriya, kuma har zuwa 15 ga Fabrairu, ya faru a mafi yawan lokuta tsakanin samfura a cikin ƙasar ta ƙarshe.^[4] Ya zuwa ranar 24 ga Fabrairu, an sami shari'o'i 56 a Burtaniya. Denmark, wanda ke jera duk lamuran COVID-19, ta sami kararraki 113 na wannan bambance-bambancen daga 14 ga Janairu zuwa 21 ga Fabrairu, wanda bakwai daga cikinsu suna da alaƙa kai tsaye da balaguron balaguro zuwa Najeriya.^[3]

Kwararru a Burtaniya suna nazarinsa don fahimtar irin haɗarin da zai iya kasancewa. A halin yanzu ana ɗaukarsa a matsayin "bambance -bambancen da ke ƙarƙashin bincike", amma ana jiran ƙarin nazari, yana iya zama " bambancin damuwa ". Farfesa Ravi Gupta, daga Jami'ar Cambridge ya yi magana da BBC kuma ya ce jinsi B.1.525 da alama yana da "manyan canje -canje" waɗanda aka riga aka gani a cikin wasu sabbin bambance -bambancen, wanda wani ɓangare yana ƙarfafawa saboda yuwuwar tasirin su ya kai wani matakin da ake iya faɗi. .

Karkashin tsarin sauƙaƙƙen sunaye da Hukumar Lafiya ta Duniya ta gabatar, nassi B.1.525 an yi masa lakabi da bambancin Eta.

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  Canjin amino acid na SARS-CoV-2 Eta bambance-bambancen da aka ƙulla akan taswirar kwayar cutar SARS-CoV-2 tare da mai da hankali kan haɓaka.

1. ↑ "Delta-PCR-testen" [The Delta PCR Test] (in Danish). Statens Serum Institut. 25 February 2021. Retrieved 27 February 2021.
2. ↑ ^{2.0 2.1} "GISAID hCOV19 Variants (see menu option 'G/484K.V3 (B.1.525)')". GISAID. Retrieved 4 March 2021.
3. ↑ ^{3.0 3.1} "Status for udvikling af SARS-CoV-2 Variants of Concern (VOC) i Danmark" [Status of development of SARS-CoV-2 Variants of Concern (VOC) in Denmark] (in Danish). Statens Serum Institut. 27 February 2021. Retrieved 27 February 2021.
4. ↑ ^{4.0 4.1} "B.1.525". cov-lineages.org. Pango team. Retrieved 2021-03-22.