CDC director 'really worried' about states rolling back Covid safety measures as U.S. cases appear to plateau CNBCCDC Director Warns Americans to Remain Vigilant as Third Vaccine Rolled Out Bloomberg Quicktake: NowAll our recent progress with Covid-19 could be wiped out by variants, CDC director says. 'Please stay strong' CNN As a new vaccine becomes available, CDC chief warns against rolling back safeguards PBS NewsHourCDC Director Warns Latest COVID-19 Data Could Spell Trouble For The US HuffPostView Full Coverage on Google News