US 'not of the woods yet', says CDC chief, as Delta variant drives Covid surge – video

The US is at another ‘pivotal momentin the pandemic as the Delta variant drives a big rise in new cases, said CDC director, Rochelle Walensky, who warned ‘we are not out of the woods yet’. Lei ha aggiunto: ‘The Delta variant is more aggressive and much more transmissible than previously circulating strains,’ lei disse. ‘It is one of the most infectious respiratory viruses that we know of and that I have seen in my 20-year career.

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