A change at the hospital can safely cut the number of UTI tests in half. That could reduce the use of antibiotics and therefore drug-resistance.

Despite FDA warnings, many patients leave hospitals with prescriptions for powerful but dangerous antibiotics.

A gene variant tht predisposes someone to tuberculosis is surprisingly common. You might have it—but that doesn't mean you're going to get sick.

A new way to deliver antibodies directly into the lungs could help ward off RSV, which is usually not a big deal, but can be dangerous for some children.