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(CNN)The more contagious Delta variant of Covid-19 now makes up 83% of sequenced samples in the United States, US Centers for Disease Control and Prevention Director Dr. Rochelle Walensky said Tuesday. "This is a dramatic increase, up from 50% for...
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After the corona epidemic, the world seems to have started an important ritual several times a day. A large population of the world has a passion to wash their hands from time to time, which has the full potential to...
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