Last week there were an average of 3,140 patients in hospital in England with flu. That's a rise of 18% on the previous week ...

The death toll and economic damage associated with flu highlight its role as one of the most harmful viruses in history.

Researchers are striving to understand the impact a phenomenon known as original antigenic sin has on immunity to the virus.

The level of flu varies by state. But overall, more people have recently tested positive for influenza, with flu-related ...

Ahead of the holiday tourist rush, city health officials in New York City reported nearly 14,000 flu cases in the first week ...

We used to assume bird flu was a risk solely for outdoor hunters, but new data suggests the virus is entering the home ...

A surge of influenza among school-aged kids is linked to the recent deaths of multiple Ontario children, prompting calls for ...

A new version of the common flu is spreading globally, and health officials are monitoring this evolving strain of influenza ...

Flu season hits New York hospitals as cases and hospitalizations rise sharply, straining emergency and pediatric care at Northwell Health.

Today's influenza vaccines primarily prevent infection in individuals, but new research led by the University of Michigan and ...

Health officials are warning people about a flu virus called H3N2 that is spreading in the United States and other countries ...

Scientists have captured an unprecedented, real-time view of influenza viruses as they move across and slip inside human ...