Both types spread the same way, cause similar symptoms, and are most dangerous for babies and the elderly. The flu vaccine is formulated to protect against both types. The dominance of influenza A ...

There are two players every flu season: influenza Type A and Type B. Influenza A tends to pop up early in the season and accounts for more than 75 percent of all cases, while influenza B typically ...

Influenza, commonly known as the flu, is a contagious respiratory illness caused by the influenza virus. According to the Centers for Disease Control and Prevention (CDC), there are four types of ...

The two most common — and most severe — flu strains are A and B, the CDC says. Type A is known to cause more severe illness. Both viruses spread the same way and both are more likely to cause ...

A strain of bird flu never seen before in the United States has been detected among poultry at a California farm. The virus, called highly pathogenic H5N9, is a type of avian influenza ...

The flu is a common illness, but it can be serious. By understanding the symptoms, getting vaccinated, and following simple ...

(NEXSTAR) – The flu is spreading far and wide across the U.S. – and influenza A is largely to blame. Of all the flu tests reported to the Centers for Disease Control and Prevention since the ...