US coronavirus: Vaccines are less protective against Delta infection but still reduce risk by two-thirds, CDC study shows

Chandra B. Soto

“While we did see a reduction in the protection of the Covid-19 vaccine against the Delta variant, it’s still two-thirds reduction of risk,” lead author Ashley Fowlkes, an epidemiologist for CDC Covid-19 Emergency Response, told CNN on Tuesday. The study’s reliance on regular, weekly testing makes it possible to capture […]

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