Breakthrough Covid Cases: Uncommon and Often Mild, but Not Always

Vaccination remains the best defense, health experts say. But some infections occur regardless, and can come as a traumatic surprise.

‘It’s Nowhere Near Over’: A Beach Town’s Gust of Freedom, Then a U-turn

Provincetown, Mass., the quirky community at the tip of Cape Cod, thought it was safe to return to prepandemic partying. It wasn’t.

C.D.C. Internal Report Calls Delta Variant as Contagious as Chickenpox

Infections in vaccinated Americans are rare, compared with those in unvaccinated people, the document said. But when they occur, vaccinated people may spread the virus just as easily.

Why Vaccinated People Are Getting ‘Breakthrough’ Infections

The vaccines are effective at preventing serious illness and death, but they are not a golden shield against the coronavirus.

Humpback Whale Nearly Eats a Lobsterman, Then Thinks Better of It

Michael Packard, a lobster diver in Provincetown, Mass., found himself inside the mouth of a whale on Friday morning, then was spit out.