Muaj kev nce ntxiv sai sai ntawm tus kab mob SARS CoV-2 uas muaj tus kab mob delta variant hauv Fabkis thaum Lub Rau Hli 2021 raws li kev tshuaj xyuas ntawm 5061 tus qauv zoo 1. Ob peb lub lis piam tom ntej no yog qhov tseem ceeb heev rau kev tshwm sim ntawm nthwv dej thib peb vim muaj kev sib kis ntau dua ntawm tus kab mob delta variant thiab qhov cuam tshuam uas nws yuav muaj rau lub tsev kho mob pej xeem thiab ntiag tug. Kev tuag thiab kev mob nkeeg uas yuav cuam tshuam nrog nthwv dej thib peb yuav nyob ntawm qhov ua tau zoo ntawm AstraZeneca ChAdOx1 tshuaj tiv thaiv , rau tus kab mob delta variant, uas tau muab rau cov pej xeem.
Kev tshuaj xyuas cov pej xeem UK uas tau txais koob tshuaj ChAdOx1 thawj zaug thiab thib ob qhia tau hais tias tom qab koob tshuaj thawj zaug, cov tshuaj tiv thaiv tsis muaj txiaj ntsig (33.5% piv rau B.1.617.2 [delta variant] piv rau 51.1% piv rau B.1.1.7 variant) 2. Tsis tas li ntawd, tom qab koob tshuaj thib ob, cov tshuaj tiv thaiv tsis muaj txiaj ntsig (59.8% piv rau B.1.617.2 [delta variant] piv rau 66.1% piv rau B.1.1.7 variant) 2.
Vim li cas peb thiaj pom muaj ntau yam kab mob COVID-19 sib txawv hauv ntau lub tebchaws thaum lub sijhawm sib txawv? Tej zaum cov lus teb yuav yog qhov tseeb tias kev tiv thaiv kab mob tseem tsis tau txog thiab " kev kaw" tau raug tshem tawm ua rau muaj kab mob COVID-19 tom ntej. Qhov "kev kaw" qhov tseeb tiv thaiv kev sib kis ntawm tus kab mob thiab yog li tiv thaiv kev sib kis thiab kev hloov pauv ntawm tus kab mob. Txawm li cas los xij, qhov teeb meem uas ntsib yog qhov tseeb tias txhua zaus muaj kab mob los, tus kab mob muaj lub sijhawm hloov pauv uas yuav ua rau muaj tus kab mob sib kis tau ntau dua (hom kab mob uas muaj kev sib kis ntau dua ua rau muaj kev ciaj sia ntawm txoj kev xav zoo tshaj plaws), yog li tsis lees paub qhov cuam tshuam ntawm kev tiv thaiv kab mob tiv thaiv kab mob tiv thaiv tus kab mob yav dhau los. Tsis ntev los no, muaj tus kab mob tshiab hu ua delta plus variant tau tshwm sim uas muab tus kab mob delta variant nrog K417N mutation (thawj zaug pom hauv Beta variant uas tshwm sim hauv South Africa). Tus kab mob delta plus variant no tiv taus kev kho mob antibody. Tag nrho cov no ua rau muaj kev sib tw nyuaj hauv kev ua kom muaj kev tiv thaiv kab mob.
Kev tiv thaiv kab mob ntawm cov tsiaj txhu 3 tseem yuav raug ncav cuag yog tias cov tshuaj tiv thaiv uas tau muab rau muab kev tiv thaiv tseem ceeb ntawm tsawg kawg yog ntau dua 90% raws li tau hais los ntawm cov tshuaj tiv thaiv mRNA ntawm Pfizer thiab Moderna (93.4% nrog 2 koob tshuaj ntawm Pfizer tawm tsam B.1.1.7 variant thiab 87.9% tawm tsam B.1.617.2 [delta variant]). Txawm li cas los xij, cov tshuaj tiv thaiv no tau muab rau hauv Tebchaws Meskas thiab UK, thaum lwm lub tebchaws feem ntau nyob ntawm ChAdOx1 (AstraZeneca) tshuaj tiv thaiv, Lavxias teb sab Sputnik V tshuaj tiv thaiv thiab Is Nrias teb Covaxin tshuaj tiv thaiv. Cov tshuaj tiv thaiv no yuav lossis tsis muab kev tiv thaiv zoo tiv thaiv cov kab mob tshiab tsim. Yog tsis muaj cov tshuaj tiv thaiv zoo thiab qhov tseeb tias cov kab mob tshiab kis tau yooj yim tau tsim yuav luag txhua zaus tus kab mob rov ua dua ua rau mutation, nws yuav siv sijhawm ntau lub hlis kom mus txog qhov kev tiv thaiv ntawm cov tsiaj txhu thiab cov nthwv dej tom ntej ntawm COVID-19 yuav txuas ntxiv mus txog thaum ua tiav kev tiv thaiv ntawm cov tsiaj txhu.
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References
- Alizon S., Haim-Boukobza S., et al 2021. Rapid spread of the SARS-CoV-2 δ variant in the area of Paris (France) in June 2021. Posted June 20, 2021 in Preprint medRxiv. DOI: https://doi.org/10.1101/2021.06.16.21259052
- Bernal JL, Andrews N, Gower C et al. Kev ua tau zoo ntawm cov tshuaj tiv thaiv COVID-19 tawm tsam B.1.617.2 variant. Tshaj tawm Lub Tsib Hlis 24, 2021. DOI: https://doi.org/10.1101/2021.05.22.21257658
- Soni R 2021. COVID-19: Kev Ntsuam Xyuas Kev Tiv Thaiv Kab Mob thiab Tiv Thaiv Kab Mob. Muaj nyob online ntawm http://scientificeuropean.co.uk/covid-19/covid-19-an-evaluation-of-herd-immunity-and-vaccine-protection/
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