COVID

The North Korean leader didn't say exactly what the incident was, nor did he contradict the country's official line, which is that it has not had a single COVID-19 infection so far.

Their workload has doubled. They don't go home when their shifts end lest they infect family members. But they say it's worth the sacrifices to lend a hand in the fight against COVID-19.

More contagious than other variants, and maybe more likely to cause severe disease, Delta is spreading so fast in the U.S. it could cause another surge this summer or fall, according to new research.

Oxford-AstraZeneca promised its COVID-19 vaccine would be effective, cheap and available worldwide. Five months after its launch, the path forward has been anything but smooth.

A Skagit Valley Chorale rehearsal early last year became a deadly COVID-19 superspreader event. Now, the group is figuring out how to come back together and reforge the bonds of a community choir.

As states across the U.S. begin lifting indoor mask mandates for the fully vaccinated, there's widespread confusion. Both businesses and customers are struggling over their decisions on mask-wearing.

African nations had been counting on Serum Institute of India for nearly all their COVID vaccines. Now the company says it won't be sending any more for months. And African officials are scrambling.

The financial gap between wealthy hospitals and safety-net hospitals, which take everyone who walks through their doors, has widened during the pandemic, an NPR and PBS Frontline investigation found.

Many Americans are still making sense of new CDC guidance that vaccinated people no longer have to wear masks in most indoor settings.

When the 2014 Ebola outbreak was spiraling out of control, Gayle Smith worked on the team that devised the Obama administration's response.

A pregnant journalist investigates and finds many pregnant, COVID-positive women can't access life-saving healthcare during the country's deadly second wave.