LEEJ TWG taug qab omicron BA.4 thiab BA.5 subvariants thaum lawv kis mus rau Africa thiab Europe

Omicron subvariants BA.4 thiab BA.5 yog nyob rau theem qis hauv ntau lub tebchaws nyob rau yav qab teb Africa thiab Europe, raws li Lub Koom Haum Ntiaj Teb Kev Noj Qab Haus Huv. 

Ob qhov sib txawv ntawm cov kab mob sib kis tau zoo heev Covid-19 tau kuaj pom hauv Botswana, South Africa, Lub Tebchaws Yelemees thiab Denmark, ntawm lwm lub tebchaws, WHO tus kws tshaj lij ntawm Covid-19 Maria Van Kerkhove tau hais rau hnub Thursday.

BA.4 thiab BA.5 tsis tshwm sim kom kis tau ntau dua lossis tuag taus ntau dua li qhov qub omicron hloov mus txog tam sim no, tab sis qhov ntawd tuaj yeem hloov pauv raws li kuaj pom ntau dua, nws hais ntxiv. Van Kerkhove tau hais txog qhov yuav tsum tau ua kom muaj "roj zog" genome soj ntsuam cov tshuab uas yuav tso cai rau cov teb chaws taug qab thiab txheeb xyuas ob lub subvariants nrog rau cov qauv ua ntej ntawm omicron. 

“Nws tseem yog hnub ntxov. Qhov peb yuav tsum ua kom paub tseeb yog tias peb tseem muaj peev xwm taug qab, muaj peev xwm sib qhia thiab muaj peev xwm txheeb xyuas kom peb tuaj yeem teb cov lus nug zoo li no, "Van Kerkhove tau hais thaum lub sijhawm WHO cov lus qhia luv luv uas tau tshaj tawm hauv xov xwm. lub koom haum social media platforms.

Nws cov lus hais tuaj hnub tom qab WHO hais tias nws tau taug qab ob peb lub kaum os ntawm BA.4 thiab BA.5, ntxiv rau yav dhau los omicron variants xws li BA.1, BA.2, BA.3 thiab BA.1.1. 

Nws kuj tuaj raws li qhov sib kis tau ntau dua BA.2 subvariant nce mus thoob plaws ntau qhov chaw hauv ntiaj teb, ua rau muaj nthwv dej tshiab ntawm Covid cov neeg mob tom qab qhov tsis tau pom dua tshwm sim los ntawm thawj omicron variant, BA.1, thaum lub caij ntuj no. BA.2 tam sim no yog lub hom phiaj tseem ceeb hauv ntiaj teb. Hauv Teb Chaws Asmeskas, kev tsim kwv yees li 85% ntawm cov xwm txheej tshiab txuas ntxiv thiab tseem yog qhov tseem ceeb tshaj plaws nyob rau thaj tsam qaum teb sab hnub tuaj ntawm lub tebchaws uas nws sawv cev txog 92% ntawm cov xwm txheej tshiab, raws li cov ntaub ntawv los ntawm Lub Chaw Tiv Thaiv thiab Tiv Thaiv Kab Mob.

Cov qauv BA.4 ntxov tshaj plaws tau sau nyob rau hauv South Africa thaum Lub Ib Hlis 10, tab sis cov ntaub ntawv qhia tau hais tias "sau ntawm cov genomes" thiab thaj chaw sib kis ntawm cov subvariant yog tsis ntev los no, raws li ib tug daim ntawv qhia los ntawm UK Lub Chaw Saib Xyuas Kev Nyab Xeeb Kev Nyab Xeeb tau tshaj tawm lub lim tiam dhau los. Raws li lub Plaub Hlis 8, South Africa tau tshaj tawm 41 BA.4 tus neeg mob, Denmark tau tshaj tawm peb kis, Botswana tshaj tawm ob thiab Askiv, nrog rau Scotland, tshaj tawm ib qho. 

"Txawm hais tias tus naj npawb ntawm tag nrho cov genomes tsawg, qhov pom tseeb ntawm thaj chaw sib kis qhia tias qhov sib txawv tau kis tau zoo," UK Lub Tsev Haujlwm Saib Xyuas Kev Noj Qab Haus Huv tau hais hauv tsab ntawv ceeb toom.

Daim ntawv tshaj tawm kuj tau hais tias muaj 27 qhov xwm txheej ntawm BA.5 txog lub Plaub Hlis 8, uas tau tshaj tawm hauv South Africa thaum Lub Ob Hlis 25 txog Lub Peb Hlis 25. Tab sis Botswana lub chaw saib xyuas kev noj qab haus huv rau hnub Monday tau hais tias nws muaj. txheeb xyuas Ob leeg BA.4 thiab BA.5 kis ntawm cov neeg tau txhaj tshuaj tag nrho hnub nyoog 30 txog 50, Reuters tau tshaj tawm. 

Lub koom haum WHO tau pib taug qab BA.4 thiab BA.5 vim tias lawv muaj kev hloov pauv tshiab "uas yuav tsum tau kawm ntxiv kom nkag siab txog lawv qhov cuam tshuam rau lub cev tiv thaiv kab mob," raws li Reuters. 

Ob lub subvariants muaj kev hloov pauv ntxiv hauv cheeb tsam spike, ib feem ntawm tus kab mob uas siv los cuam tshuam tib neeg lub hlwb, thiab kev hloov pauv tshwj xeeb sab nraud ntawm thaj av ntawd, raws li WHO. daim ntawv qhia luam tawm hnub Wednesday. Cov kev hloov pauv no cuam tshuam nrog "muaj peev xwm tiv thaiv kev tiv thaiv tus yam ntxwv," tsab ntawv ceeb toom tau hais.

Lwm cov kws tshawb fawb omicron subvariant hu XE kuj tseem muaj nyob rau theem qis hauv ntau lub tebchaws. 

XE yog ib qho "recombinant" variant uas tshwm sim thaum ib tug neeg kis tus kab mob ntau tshaj ib hom kab mob uas tom qab ntawd muab tso rau hauv ib qho kev hloov tshiab. Hauv XE cov ntaub ntawv, nws yog kev sib txuas ntawm thawj omicron BA.1 strain thiab BA.2 tshiab, raws li Van Kerkhove.

Nws tau hais tias "Peb tsis tau pom qhov kev hloov pauv loj," nws hais tias, txhais tau tias tsis muaj kev tuag ntau dua li cov kab mob ua ntej.

Daim ntawv tshaj tawm los ntawm UK Lub Tsev Haujlwm Saib Xyuas Kev Noj Qab Haus Huv, txawm li cas los xij, hais tias cov ntaub ntawv tsis ntev los no qhia tias XE yuav kis tau ntau dua. 

Tab sis nws tau sau tseg tias qhov kev kwv yees tsis tau zoo ib yam li cov ntaub ntawv tshiab tau ntxiv, txhais tau hais tias "nws tseem tsis tuaj yeem txhais tau tias qhov kev kwv yees ntawm kev loj hlob kom zoo dua rau recombinant." 

Cov ntaub ntawv pov thawj ntxov tshaj plaws ntawm XE muaj cov qauv kuaj hnub tim 19 Lub Ib Hlis, thiab tau kuaj pom hauv UK, Thaib, Is Nrias teb, Israel thiab tsis ntev los no. Nyiv. Teb Chaws Asmeskas tseem tsis tau tshaj tawm ib rooj plaub ntawm subvariant. 

Cov xwm txheej ntawm tus kab mob tshiab tau ze li ob npaug hauv tebchaws Askiv, raws li cov ntaub ntawv tshiab los ntawm UK Health Security Agency. Kwv yees li 1,125 tus neeg mob XE tau txheeb xyuas txog lub Plaub Hlis 5, uas yog nce los ntawm 637 tus neeg mob rau lub Peb Hlis 25. 

CNBC's Spencer Kimball thiab Karen Gilchrist contributed rau daim ntawv no.