Kate Colby, MPH, is a public health expert with extensive experience in infectious disease epidemiology. Marley Hall is a writer and fact-checker for Health.com specializing in medical and health ...

Four viruses are circulating in the U.S., sparking concerns of a possible “quademic." Here's what to know about risk factors ...

Egg prices have more than doubled over the last two years as a dangerous strain of bird flu has swept across the country.

The flu season is set to last into the spring, typically slowing in May, according to the Cleveland Clinic. Influenza viruses can spread year-round. Symptoms of the flu usually come on suddenly ...