A heavily mutated Covid variant emerges in southern Africa: Here’s what we know so far
KEY POINTS The World Health Organization said a heavily mutated version of the virus that causes Covid-19 poses a possible increased risk of reinfection. The WHO named the strain omicron and labeled it a variant of concern. South African scientist Tulio de Oliveira said in a media briefing that the variant contains more than 30 mutations to the spike protein, the component of the virus that binds to cells. The World Health Organization on Friday labeled a new heavily mutated strain of Covid-19 a variant of concern. “This variant has a large number of mutations, some of which are concerning,” the WHO said in a statement released Friday. “Preliminary evidence suggests an increased risk of reinfection with this variant, as compared to other VOCs.”The variant, first known as B.1.1.529 and now named omicron, has been detected in small numbers in South Africa, WHO officials said. However, the number of omicron cases “appears to be increasing” in almost all of South Africa’s prov...