Add Yahoo as a preferred source to see more of our stories on Google. Where will the next pandemic come from? One expert says his "bet is on viruses." (Getty Images/Science Photo Libra) (Getty ...

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 ...

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 ...

Viroids are tiny strands of circular, infectious RNA. They differ from viruses in that they do not have a protective protein coat and that they do not encode any proteins of their own. They are also ...

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 ...