Concern about thehighly transmissible delta COVID-19 variant and its spread among the unvaccinated continues to grow as U.S. cases rise, but positive news about vaccines’ ability to fight the virus keeps coming.
On Thursday, Johnson & Johnson said its one-dose shot protects against the delta variant, citing lab tests of vaccine recipients’ blood. And amid concern that their shot might require a booster, the company said its immune response lasts eight months and counting.
But public health experts say the variant poses the most danger in regions where vaccinations are sparse.
The variants “are able to find any gaps in our protection,” Dr. Hilary Babcock of Washington University at St. Louis said, pointing to how
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