A norovirus infection is characterized by sudden vomiting and diarrhea. Outbreaks are often seen on cruise ships, in ...

The number of cases of a wretched stomach bug are up in parts of the US this winter, according to government data. Here's ...

The patient in Louisiana who was hospitalized with severe bird flu illness was found to have a mutated version of the virus.

Outbreaks of the highly contagious stomach virus are more than double what they were last year at the time, CDC says. Protect ...

A genetic analysis suggests the bird flu virus mutated inside a Louisiana patient who contracted the nation’s first severe ...

Respiratory illness activity is currently considered "high" in the United States, according to the CDC. In one state, it is at a "very high" level.

The virus is spreading among animals, while viral mutations raise concerns about potential adaptation to human hosts.

Certain areas of the United States are seeing spikes in cases of norovirus, a highly contagious stomach bug, health experts said. The Centers for Disease Control and Prevention reported 91 outbreaks ...