Allison Aubrey, Selena Simmons-Duffin, Rob Stein, Carmel Wroth - NPR

National

Delta is surging. Here's what you need to know to stay safe

Allison Aubrey, Selena Simmons-Duffin, Rob Stein, Carmel Wroth - NPR

But if you're already vaccinated, how worried should you be? What new precautions are called for? Here's what to know about the fast-spreading variant and how to stay safe and protect others.