Viruses easily spread between humans through coughs, needles, and sex. Animals can also infect humans through infected feces, blood, and tissue.

Cold air does not kill germs. Actually, cold weather can make it easier for viruses and bacteria to spread — here's why.

H5N1 avian influenza has long been a concerning virus. Since its discovery in 1996 in waterfowl, bird flu has occasionally caused isolated human cases that have quite often been fatal. But last year ...

Researchers from the University of Hong Kong have discovered that the Epstein-Barr virus (EBV), a common human virus closely linked to nasopharyngeal carcinoma (NPC), can change the 3D structure of ...

Rachel Feltman: For Scientific American’s Science Quickly, I’m Rachel Feltman. H5N1 bird flu has been making a lot of headlines since last year, and for good reason: since March 2024 this subtype of ...

Clark County, Wisconsin, has reported its first human case of West Nile virus for the year. The virus is spread by mosquito bites, not from person to person, and is most common in late summer. While ...

Pueblo County has its first human case of West Nile virus in 2025, leading to a hospitalization. West Nile virus, spread by infected mosquitoes, can cause serious illness, including fever, meningitis, ...

Ohio is leading the nation this year in the number of La Crosse virus cases, a mosquito-borne illness that most commonly ...