Over 160,000 people this season have landed in the hospital from flu complications, CDC estimates. More than 6,600 have died. Here are the symptoms.

The Associated Press viewed a copy of Nkengasong's memo, which said the stop-work policy applied to "all CDC staff engaging ...

Experts said the sudden stoppage was a surprise and would set back work on investigating and trying to stop outbreaks and ...

The government is investigating a rare strain of avian flu, H5N9, detected on a duck farm in central California, according to ...

The Centers for Disease Control and Prevention abruptly ordered its staff to cease all collaboration with the World Health ...

As egg prices continue to soar across the country, there are new concerns about bird flu as a new strain was discovered at a ...

The H5N9 strain of avian influenza is much more rare than the H5N1 which has been responsible for most of the reported human ...