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

We've all heard of "the flu" but when it comes to types, subtypes and variants, influenza can get a bit complicated. According to the U.S. Centers for Disease Control and Prevention (CDC), nearly ...

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

With its many variations, its ability to mutate, evade population immunity, and spread throughout the population, and its potential to cause serious illness and even death, the influenza viruses are ...

Influenza D, a relatively recent addition to the alphabet of flu viruses, most commonly infects cattle. But experts have their eye on the threat it could potentially pose to humans. Veterinarians ...

Highly pathogenic avian influenza A(H5N1) viruses have caused widespread infections in dairy cows and poultry in the United States, with sporadic human cases. We describe characteristics of human ...