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In this NPR article, science writers Selena Simmons-Duffin and Rob Stein share what we know — and don’t know — about breakthrough cases.

Almost 60% of adults in the U.S. have been fully vaccinated. But those numbers hide an uncomfortable truth, writes Dhruv Khullar in the New Yorker.

The island territory relied on a multipronged, collaborative approach to educate its citizens on the dangers of COVID-19 and the need to be vaccinated.

Studies suggest the Johnson & Johnson COVID-19 vaccine is very effective at protecting against hospitalization and death.

Childhood vaccination rates in the U.S. have declined and experts say vaccine hesitancy could bring a resurgence of previously controlled diseases.