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What we know so far about COVID-19 variants worldwide

What we know so far about COVID-19 variants worldwide © Kena Betancur/AFP via Getty Images, FILE Scientists around the world are on the lookout for new COVID-19 variants, which are caused by mutations of the virus when its replication machinery makes an error. Experts say these mutations and the new variants are normal and to be expected. In recent months, so-called variants of concern have been identified in the U.K., South Africa, Brazil and in the U.S. And it s not a coincidence they re appearing in these countries, which have been overwhelmed by the sheer number of COVID-19 cases.

Brazil variant of coronavirus detected in US for first time

Brazil variant of coronavirus detected in US for first time Share Updated: 7:58 PM EST Jan 25, 2021 By Christina Maxouris, Holly Yan and Steve Almasy, CNN Brazil variant of coronavirus detected in US for first time Share Updated: 7:58 PM EST Jan 25, 2021 Hide Transcript Show Transcript the president will sign AH presidential proclamation to reduce the spread of Cove in 19 through travel, especially as we see faster spreading variants emerging across the world. This proclamation is part of the Biden administrations, whole of government, decisive and science driven response to the Cove in 19 Pandemic of particular. Note. On advice of our administration s medical and covert team, President Biden has decided to maintain the restrictions previously in place for the European Changin area the United Kingdom, Republican Republic of Ireland and Brazil. With the pandemic worsening and more contagions variant contagious variants spreading, this isn t

What we know so far about COVID-19 variants in the US, UK and worldwide

UK variant (B.1.1.7) The U.K. variant was one of the first identified variants of concern. It s estimated to have first emerged in September, and it quickly gained a foothold, spreading like wildfire throughout the U.K. and then other parts of the world. At least 293 cases have been reported in the U.S., according to the Centers for Disease Control and Prevention, which said the actual tally probably exceeds that. There s good evidence this variant is more transmissible, spreading more easily and more quickly. This increased transmissibility is believed to be due to mutations in the spike protein the part of the virus that allows it to stick to cells. This spike protein is what the vaccines target.

COVID-19 variants: What we know about mutants in the US, UK and worldwide

UK variant (B.1.1.7) The U.K. variant was one of the first identified variants of concern. It s estimated to have first emerged in September, and it quickly gained a foothold, spreading like wildfire throughout the U.K. and then other parts of the world. At least 293 cases have been reported in the U.S., according to the Centers for Disease Control and Prevention, which said the actual tally probably exceeds that. There s good evidence this variant is more transmissible, spreading more easily and more quickly. This increased transmissibility is believed to be due to mutations in the spike protein the part of the virus that allows it to stick to cells. This spike protein is what the vaccines target.

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