But one event in particular stands out, largely due to the fact it remains among the biggest ever recorded 25 years later.

Experts urge U.S. to prepare for possible new pandemic as H5N1 bird flu outbreak spreads with dairy animal and human cases. Here's what to know.

Scientists have discovered a new type of immune defense in E. coli bacteria that turns viral infection machinery against the ...

A powerful new computer virus was today causing havoc with e-mail ... problematic for those unfortunate enough to receive it." The infected e-mail has the word "Hi" as its subject and body text ...

Oropouche virus is more common and dangerous than believed, especially in warm, rainy regions. Experts recommend insect ...

The most dangerous computer virus now arrives on WhatsApp: just open a message and your mobile phone is infected. How?

No matter what you've heard, Macs get viruses too. Here's what to do if you suspect a malware infection on your Mac—and how ...

No cases have ever been reported outside the U.S. People who live, work or spend recreational time in wooded areas have a higher risk of becoming infected with La Crosse virus than others ...