The Delta variant is now dominant in the United States as new Covid-19 cases rise week-to-week.
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Delta variant's trajectory in UK and Israel provides hope for US -- if we can keep vaccinating
All eyes are on the Delta variant that is now dominant in the United States as new Covid-19 cases rise week-to-week and the variant -- first identified in India and also known as B.1.617.2 -- accounts for a growing share.
