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Tweaked boosters rolled out for Americans 12 and older last month, modified to target today's most common and contagious variant. The latest move may expand protection before an expected winter wave.

NPR asked COVID-19 experts how we should keep weighing risk as we enter the fourth year of the pandemic.

Dr. Sumit Ray, critical care chief at a New Delhi hospital, is on the front lines of India's growing COVID-19 crisis. "As a system in different parts of the country, we have collapsed," he says.

Antibody tests may be coming soon to a pharmacy near you. Here's what the tests reveal — and don't reveal — about you and COVID-19.

The Department of Health and Human Services says it will require new vaccines to be tested against a placebo, which could complicate and delay Food and Drug Administration approval of many vaccines.

Scientists are beginning to come up with answers to the question of how long antibodies from an infection can protect you — and what they'll protect you from.

Taylor Korn, a lifelong Boulder, Colo., resident, had already lost her father and grandmother this past summer. Then a wildfire took her home and two dogs.

Visual artists are fighting back against unauthorized uses of AI on their work by using tools that contaminate and confuse the AI systems. One tool, for example, can make AI think a dog is a cat.

President Trump signed an executive action yesterday to start shutting down the Education Department, which could hurt low-income and rural schools. And, this week's new music, movies and books.

A study finds people who eat more than one serving of red meat a day are at higher risk of developing Type 2 diabetes. Processed meats, like bacon and hot dogs, were linked to an even higher risk.