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COVID-19 crisis: Indian, South African variants detected in Americas, says WHO expert The four most worrying coronavirus variants have been detected in virtually all countries and territories of the Americas, but although they are more transmissible there is no evidence they are more lethal, a World Health Organization expert said Reuters | May 14, 2021 | Updated 08:10 IST The newest variant, the Indian B.1.617 variant, has been detected in cases in eight countries of the Americas, including Canada and the United States. The four most worrying coronavirus variants have been detected in virtually all countries and territories of the Americas, but although they are more transmissible there is no evidence they are more lethal, a World Health Organization expert said on Thursday.

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