Verskil tussen weergawes van "Ernstige akute respiratoriese sindroom koronavirus 2"

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'n Meer potente variant van die virus, aangedui as Alpha (oftewel B.1.1.7), het in Desember 2020 in die [[Verenigde Koninkryk]] verskyn. 4,1 (eerder as 2,5) uit 1&nbsp;000 geïnfekteerdes wat dit opdoen sal sonder behandeling sterf.<ref name="km1">{{cite news |last1=Macnamara |first1=Kelly |last2=AFP |title=UK Covid-19 variant 64% deadlier than other strains – study |url=https://citizen.co.za/news/covid-19/2453688/uk-covid-19-variant-64-deadlier-than-other-strains-study/ |access-date=10 Maart 2021 |work=Covid-19 |agency=The Citizen |publisher=citizen.co.za}}</ref> Die Delta-variante (B.1.617.2, AY.1 en ander) is 60% meer oordraagbaar as die Alpha-variant en 100% meer oordraagbaar as die oorspronklike virus,<ref name="wgo1">{{cite news |title=WGO twyfel nou of entstof die pandemie kan beeindig |url=https://maroelamedia.co.za/nuus/wereld/wgo-twyfel-nou-of-entstof-die-pandemie-kan-beeindig/ |access-date=17 September 2021 |agency=AFP |publisher=maroelamedia.co.za |date=11 September 2021}}</ref> en het 'n korter inkubasieperiode as enige Delta-voorgangers.<ref name="mcc1"/>
 
Suid-Afrika se eerste infeksievlaag, laat in 2020, is oorheers deur die Beta-variant (B.1.351).<ref name="mcc1"/> Teen April 2021 was verskillende mutasies in Suid-Afrika aanwesig, maar die derde infeksievlaag was nog nie op hande nie.<ref name="mar1">{{cite news |title=Covid-19: Minstens 55 gevalle by Tuks aangemeld |url= https://maroelamedia.co.za/nuus/sa-nuus/munisipale-bestuurder-vas-oor-bedrog-van-r100-miljoen/ |access-date=10 Mei 2021 |agency=Maroela Media |publisher=maroelamedia.co.za |date=2 April 2021}}</ref> Die derde vlaag in Suid-Afrika is oorheers deur die Delta-variant.<ref name="wgo2">{{cite news |title=Classification of Omicron (B.1.1.529): SARS-CoV-2 Variant of Concern |url=https://www.who.int/news/item/26-11-2021-classification-of-omicron-(b.1.1.529)-sars-cov-2-variant-of-concern |access-date=2 December 2021 |agency=Wereldgesondheidsorganisasie |date=26 November 2021}}</ref> In November 2021 het die vierde infeksievlaag 'n aanvang in Suid Afrika geneem, toe nog slegs 'n kwart25-35% van die bevolking immunisasie ontvang het.<ref name="mcc1"/><ref name="sha2">{{cite news |last1=Shange |first1=Naledi |title=Looming fourth wave no surprise but SA has all the tools to beat it, says Ramaphosa |url=https://www.timeslive.co.za/politics/2021-11-28-looming-fourth-wave-no-surprise-but-sa-has-all-the-tools-to-beat-it-says-ramaphosa/ |access-date=2 Desember 2021 |work=Politics |agency=TimesLive |publisher=timeslive.co.za |date=28 November 2021}}</ref> Die hoogs aansteeklike Omicron-variant (oftewel B.1.1.529) is op 9 November in Suid-Afrika gevind,<ref name="wgo2"/> en daar is wêreldwyd voorsorg getref. Die [[Withuis]] het streng beperkings uitgeryk op aankomelinge uit Suid-Afrika, maar vlugte na Amerika is nie verbied,<ref name="gol1">{{cite news |last1=Goldiner |first1=Dave |title= CDC tracking down travelers from southern Africa in an effort to contain COVID variant |url= https://www.nydailynews.com/coronavirus/ny-covid-omicron-cdc-tracks-down-travelers-from-southern-africa-20211201-n27vhqucbjaipppxwcleyhi6qi-story.html |access-date=2 December 2021 |agency=New York Daily News |publisher=www.nydailynews.com |date=1 December 2021}}</ref> soos by sekere ander lande nie. Die Omicron-variant is gekenmerk deur 'n paar dosyn mutasies in die S1-domein van die priemproteïen-genoom<ref name="mcc1"/> en 'n hoë infeksiekoers, maar vermoedelik ligter simptome.<ref name="hea2">{{cite news |last1=Head |first1=Tom |title=Omicron ‘will fuel record-high cases’ in SA – but it’s not all doom and gloom… |url= https://www.thesouthafrican.com/news/breaking-latest-news-omicron-variant-thursday-2-december-record-cases-gauteng/ |access-date=2 December 2021 |agency=The South African |publisher=thesouthafrican.com |date=2 Desember 2021}}</ref>
 
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