The document — a slide presentation — outlines unpublished data that shows fully vaccinated people might spread the Delta variant at the same rate as unvaccinated people, 根据邮报.
A federal health official told the newspaper that the data
, which is expected to be released Friday
, played a large role in the CDC’s updated mask guidance, which recommends that fully vaccinated people wear masks indoors when in areas with
“充实的” 和 “高” transmission
News of the document comes against the backdrop of rising coronavirus cases nationwide. The US averaged more than 61,300 new daily cases over the last week — an average that’s generally risen since the country hit a 2021 low of 11,299 daily cases on June 22, according to Johns Hopkins University data.
截至周三, cases have risen in all but one state in the past seven days compared with the week before, according to Johns Hopkins.