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

Influenza type B viruses are not classified by subtype and do not cause pandemics. Different strains of the flu virus mutate over time and replace the older strains. This is why it's important to ...

In today’s Health Alert, a new strain of bird flu - H5N9 - has been detected in the U.S. The first confirmed case was found ...

H5N9 is a rare subtype of the influenza A virus that can cause highly pathogenic avian influenza (HPAI), also known as bird ...

Spanish flu pandemic was caused by a particularly virulent strain of influenza virus. It infected 500 million people, caused ...

Health care systems are expected to use tests that identify seasonal influenza A as a subtype – so if a test comes back positive for influenza A but negative for seasonal influenza, that is an ...

The Centers for Disease Control and Prevention are monitoring the bird flu situation in the United States. Here's what to ...

Influenza is spreading across Indiana and has been responsible for at least 32 deaths so far this season. Influenza, or "flu, ...

No person-to-person spread has been detected, but that doesn’t mean an H5N1 avian influenza pandemic isn’t possible or even ...

All nine macaques given the control developed severe disease when exposed to bird flu, as did all given the smallest dose of ...