PHOENIX – Long before the coronavirus pandemic, Kathleen Muldoon knew what it felt like to have her life changed by a virus. In 2013, Muldoon was teaching embryology at the Geisel School of Medicine ...

Besides serving as food for certain microbes, viruses perform some helpful functions that remain poorly understood. A ciliate, a type of single-celled microbe, swims next to Sphagnum moss, amplified ...

Pneumonia is caused by bacteria, viruses, fungi, or inhaling foreign objects. Children under age 5, adults over age 65, and those with chronic illnesses are at higher risk for pneumonia. Certain ...

Using genomics, evolutionary biologists test several hypotheses on the origin of viruses. New evidence suggests they may have emerged more times than previously thought. Corroborating the virus-first ...

The department said the samples were found in zip codes 77041 and 77032 in Harris County, but no human cases have been reported so far.

A number of factors influence the way the virulence of a virus — that is, how harmful it is to its host — affects its ability to survive and spread; in some cases, higher virulence may help a virus ...

• Viruses have an inherent ability to unlock our immune systems, but scientists are gaining new insights into the mechanisms they use to hijack our own cellular processes. Studying them can give ...