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COVID vaccines still work against mutant, researchers find

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DELTA VARIANT

New research from France adds to evidence that widely used COVID-19 vaccines still offer strong protection against a coronavirus mutant that now accounts for most U.S. infections.

The delta variant is surging through populations with low vaccination rates. Researchers from France鈥檚 Pasteur Institute reported new evidence Thursday in the journal Nature that full vaccination is critical.

In laboratory tests, a single dose of the two-dose Pfizer or AstraZeneca vaccines 鈥渂arely inhibited鈥� the delta variant. But after a second dose just about everyone experienced a big boost in immunity.

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