Céline Gounder - Kaiser Health News

Recent research suggests that the virus is mutating to better dodge immune defenses. KHN examines what public health officials believe is on the horizon and how best to fight the disease.

Because polio has been vanishingly rare in the U.S. for nearly a half-century, doctors may not consider it when diagnosing patients with typical symptoms. Here are the signs and science behind the disease.

For now, monkeypox poses a low risk to the U.S. public, but it could become a problem if the spread is left unchecked. Here’s what everyone should know about it.