CDC Chief: Delta variant now to blame for 83 percent of New COVID Cases

CDC Chief: Delta variant now to blame for 83 percent of new COVID cases, "A dramatic increase" Since early July; Poll: majority of unvaccinated Americans say they're unlikely to get a COVID-19 shot, regardless of outreach efforts; At least 9 States block mask requirements in schools as pediatric group urges all students to mask up; Fauci: Schools may need to mandate vaccines for kids; 

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