Centers for Disease Control and Prevention

The rate of U.S. gun homicides jumped nearly 35% in 2020 to the highest level in more than 25 years. And gaps widened for groups already at the highest risk, especially Black men and boys.

Vaccinations and residual immunity are among the reasons, President Biden's chief medical adviser, Anthony Fauci, said Tuesday, as the number of deaths drop and hospitalizations rise only slightly.

So many people caught the omicron variant over the winter that almost 60% of everyone in the U.S. — including most children — now have antibodies to the virus in their blood, the CDC said Tuesday.

NPR's Ayesha Rascoe asks Kathleen Ethier, director of the CDC's Division of Adolescent and School Health, about a new survey on teen mental health.

This decision to appeal comes just two days after U.S. District Judge Kathryn Kimball Mizelle ruled against the federal mask mandate.

The Biden administration will continue to require travelers to wear masks on planes and other forms of public transport,.

Anthony Fauci walks through what he predicts the BA.2 subvariant will do in the U.S., whether we will need boosters every four months and his advice for masking at indoor events.

The BA.2 strain now accounts for more than half of all coronavirus infections nationwide, the CDC estimates. Although it's fueling a surge in Europe, the variant doesn't appear to make people sicker.

The Centers for Disease Control and Prevention held only two telebriefings in 2021. That lack of transparency has prompted criticism — and a pledge from director Dr. Rochelle Walensky to be more open.

The new recommendation for adolescents age 12-17 came hours after a panel of CDC advisers voted in favor of it. The boosters should be given five months after initial immunization.