(FILES) This file photo taken on February 24, 2020 shows the logo of the World Health Organization (WHO) written in French and Chinese at the entrance of their headquarters in Geneva. – President Donald Trump has formally withdrawn the United States from the World Health Organization, making good on threats over the UN body’s response to the coronavirus, a senator said July 7, 2020. “Congress received notification that POTUS officially withdrew the US from the @WHO in the midst of a pandemic,” Senator Robert Menendez, the top Democrat on the Foreign Relations Committee, wrote on Twitter. (Photo by Fabrice COFFRINI / AFP)
New Covid-19 variants that make the virus more contagious and could render vaccine and antibody protection less effective have spread rapidly across dozens of countries, the World Health Organization said on Wednesday.
In its latest epidemiological update, the UN health agency said the more contagious Covid-19 variant first spotted in Britain had by January 25 spread to 70 countries across all regions of the world.
That variant, which is known as VOC 202012/01 and has proven to transmit more easily than previous variants of the virus, had thus spread to 10 more countries over the past week, it said.
British Prime Minister Boris Johnson last week also warned that fresh studies had indicated the strain could be more deadly, but the WHO stressed Wednesday that those “results are preliminary, and more analyses are required to further corroborate these findings”.
The WHO also said the variant of the virus first found in South Africa had now spread to 31 countries, eight more than a week ago.
Laboratory studies have found that that variant, 501Y.V2 “is less susceptible to antibody neutralisation” than previous variants, WHO said.
This has raised serious concerns that the variant poses a heightened risk of reinfection, and also could hamper the effectiveness of the growing number of Covid-19 vaccines coming to market.
The WHO said more studies were needed but stressed that observational studies in South Africa did not indicate an increased risk of reinfection.
It also said that while studies by US biotechnology firm Moderna indicated that its vaccine could potentially be less effective against the variant, “neutralising titres remain above the levels expected to be protective”.
The WHO said a third variant of the virus, first discovered in Brazil, was now in eight countries, up from just two a week ago.
That variant, called P1, has raised similar concerns it could be more contagious or cause more severe disease.
“Further studies are needed to assess if there are changes in transmissibility, severity or antibody neutralising activity as a result of these new variants,” the WHO said.
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