The winter flu season features two types of influenza. Here's what you need to know about them and how they differ.

While the H5N1 bird flu keep spreading, the first reported H5N9 outbreak in the United States has been identified on a duck ...

Nearly 119,000 birds have been culled at a farm in California after a bird flu called H5N9 was detected among the poultry ...

Flu A and flu B are two different strains of influenza, explains Thomas Russo, M.D., professor and chief of infectious ...

A new strain of bird flu has been detected on a duck farm in California. The World Organisation for Animal Health reported ...

Both H5N9 and H5N1 were detected at the duck farm in Merced County, according to tests conducted by the US Department of ...

The California duck farm's strain of H5N9 is different from those earlier cases because this time it is closely related to a ...

The isolation of influenza virus 80 years ago in 1933 ... the 1900s); The subtype [16 possible hemagglutinin and 9 possible neuraminidase subtypes]. Thus, a type A virus isolated in 1995 in ...

We cannot rule out the possibility that part of the population already has some acquired immunity to neuraminidase type 1 influenza viruses (such as H5N1) through contact with other human ...

Spanish flu pandemic was caused by a particularly virulent strain of influenza virus. It infected 500 million people, caused around 50 million deaths, and its impact was so severe that global life ...

A new strain of H5N9 bird flu was detected at a commercial duck operation in California's Merced County. All the ducks were ...