The U.S. is seeing some of the highest West Nile virus activity in years.

San Bernardino County health officials are sounding the alert after the discovery of mosquitoes that tested positive for the ...

The Southern Nevada Health District reported that 10 additional mosquito pools tested positive for West Nile virus in Clark ...

Mosquitoes collected in Dix Hills last month have tested positive for the West Nile virus, the first this year, Suffolk ...

Though it is commonly called the "winter vomiting disease," norovirus outbreaks are still cropping up around the country in late May.

A young American crow found in El Cerrito is the first bird to test positive for West Nile virus in Contra Costa County this ...

Sacramento County confirmed its first human West Nile virus case of 2026. The patient, a woman in her 60s, is recovering, officials said.

Add Yahoo as a preferred source to see more of our stories on Google. Southbound hikers walk toward Pinchot Pass on the Pacific Crest Trail in California. (David Madison / Getty Images file) (David ...

A virus that typically infects marine animals, such as shrimp and fish, has jumped to humans and is causing chronic eye disease in some people, according to a study published in the journal Nature ...

Scientists have taken a major step toward stopping Epstein-Barr virus (EBV), an extremely common infection linked to cancer and chronic disease. By using mice engineered with human antibody genes, ...