Infectious Disease

Scientists caution that as the planet warms, more Americans could be exposed to disfiguring varieties of the Leishmania parasite. Overtreatment can be a problem, too, experts warn.

Dr. Rochelle Walensky is an infectious disease expert and teaches at Harvard Medical School. She will replace Robert Redfield, the current director of the Centers for Disease Control and Prevention.

Scientists are racing to develop a vaccine that proves "safe and effective." It may not prevent infection in everyone who gets it, but it still could eventually stop the pandemic. Here's how.

There's a lot that scientists don't know about how viral infections can interact. But researchers are eager to figure out how coronavirus infections might affect flu infections and vice versa.

CDC chief Robert Redfield says that earlier testing for the coronavirus would have been like "looking for a needle in a haystack." But other health experts dispute his assertion.

The children and preteens of the U.S. polio epidemic of the 1940s and '50s are once again in a high-risk group, this time for coronavirus. They recall their experiences and the parallels to today.

A study by the Centers for Disease Control and Prevention estimates that between 5.7% and 20% of children with COVID-19 end up in the hospital, with 2% or fewer needing intensive care.

Usually in health emergencies — HIV, vaping and more — the Centers for Disease Control and Prevention is key to shaping policy and explaining it. That's changing to America's detriment, leaders say.

The U.S. has been slow to roll out testing, leaving communities in the dark about the spread of the virus. It was a lost opportunity to stop the virus in its tracks.

China's experience shows how the virus can be stopped. But the World Health Organization's Dr. Bruce Aylward says other countries may be drawing the wrong lessons about how China achieved it.

Carl Goldman tested positive for the new coronavirus after leaving the ship and arriving in the U.S. He is recovering in an isolation unit of the University of Nebraska Medical Center.