The World Health Organization (WHO) on Friday designated a new Covid-19 variant detected in South Africa with a large number of mutations as being “of concern”, the fifth variant to be given the designation.The WHO said in a statement that it had assigned the B.1.1.529 variant the Greek letter Omicron.The UN health agency also said early evidence on the variant has shown an increased risk of reinfection compared to other highly transmissible variants, indicating that people who contracted Covid…
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