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Continue to ChatRead Now: Delta variant now accounts for 83% of all sequenced Covid cases in the U.S., CDC Director Walensky says https://www.talkofnews.com/2021/07/20/read-now-delta-variant-now-accounts-for-83-of-all-sequenced-covid-cases-in-the-u-s-cdc-director-walensky-says/