Xov xwm

XE tau pom thawj zaug hauv tebchaws Askiv thaum Lub Ob Hlis 15 xyoo no.

Ua ntej XE, peb yuav tsum kawm qee yam kev paub txog COVID-19. Tus qauv ntawm COVID-19 yog qhov yooj yim, uas yog, nucleic acids ntxiv rau lub plhaub protein sab nraud. COVID-19 cov protein tau muab faib ua ob ntu: cov qauv protein thiab cov protein tsis muaj qauv (NSP). Cov txheej txheem proteins yog plaub hom spike protein S, hnab ntawv protein E, membrane protein M thiab nucleocapsid protein N. Lawv yog cov proteins tsim nyog los tsim cov kab mob. Rau cov proteins uas tsis yog qauv, muaj ntau tshaj li kaum os. Lawv yog cov proteins encoded los ntawm tus kab mob genome thiab muaj qee yam haujlwm hauv cov txheej txheem ntawm tus kab mob replication, tab sis tsis khi rau cov kab mob.

Ib qho ntawm cov phiaj xwm tseem ceeb tshaj plaws rau kev kuaj pom nucleic acid (RT-PCR) yog thaj tsam ntawm ORF1 a/b thaj tsam ntawm COVID-19. Kev hloov pauv ntawm ntau qhov sib txawv tsis cuam tshuam rau kev tshawb nrhiav nucleic acid.

Raws li tus kab mob RNA, COVID-19 yog qhov ua rau muaj kev hloov pauv, tab sis feem ntau ntawm kev hloov pauv tsis muaj nuj nqis. Ob peb ntawm lawv yuav muaj qhov tsis zoo. Tsuas yog qee qhov kev hloov pauv tuaj yeem txhim kho lawv cov kab mob sib kis, kab mob lossis kev tiv thaiv kev tiv thaiv.

Cov txiaj ntsig ntawm gene sequencing pom tias ORF1a ntawm XE yog ntau dua los ntawm Omicron's BA.1, thaum tus so yog los ntawm Omicron's BA.2, tshwj xeeb tshaj yog cov noob ntawm S protein ib feem - uas txhais tau hais tias nws cov yam ntxwv kis tau tus mob yuav nyob ze rau BA.2. .

BA.2 yog tus kab mob kis tau zoo tshaj plaws nyob rau xyoo tas los no. Rau cov kab mob endogenous ntawm tus kab mob, peb feem ntau saib R0, uas yog, tus kab mob tuaj yeem kis tau ntau tus neeg yam tsis muaj kev tiv thaiv thiab kev tiv thaiv. Qhov siab dua R0, qhov sib kis ntau dua.

Cov ntaub ntawv thaum ntxov tau pom tias qhov kev loj hlob ntawm XE yog siab dua li ntawm BA.2 nce los ntawm 10%, tab sis tom qab cov ntaub ntawv qhia tias qhov kev kwv yees no tsis ruaj khov. Tam sim no, nws tsis tuaj yeem txiav txim siab tias nws qhov kev loj hlob ntau dua yog qhov zoo dua los ntawm kev tsim kho dua tshiab.

Nws yog thawj zaug ntseeg tias qhov sib txawv loj tom ntej no yuav kis tau ntau dua li BA.2 tam sim no muaj qhov zoo dua, thiab nws nyuaj rau kev kwv yees qhov tseeb tias nws cov tshuaj lom yuav hloov pauv li cas (nce lossis txo). Tam sim no, tus naj npawb ntawm cov hloov tshiab no tsis muaj ntau. Nws yog tsis yooj yim sua kom kos cov lus xaus seb ib qho ntawm lawv tuaj yeem txhim kho mus rau qhov sib txawv loj. Nws xav tau kev soj ntsuam ze ntxiv. Rau cov neeg zoo tib yam, tsis tas yuav tsum ntshai tam sim no. Fim cov BA.2 los yog tej zaum yuav sib txawv, kev txhaj tshuaj tseem ceeb heev.

Nyob rau hauv lub ntsej muag ntawm BA nrog lub zog tiv thaiv kev tiv thaiv kev muaj peev xwm 2. Nyob rau hauv cov ntaub ntawv ntawm cov tshuaj tiv thaiv tus qauv (ob koob tshuaj), tus nqi zoo ntawm ob qhov tshuaj tiv thaiv uas siv hauv Hong Kong rau kev tiv thaiv kab mob tau txo qis, tab sis lawv tseem muaj zog. cuam ​​tshuam rau kev tiv thaiv kev mob hnyav thiab tuag. Tom qab txhaj tshuaj thib peb, kev tiv thaiv tau zoo dua qub.