As bird flu sweeps across US poultry and cattle farms, researchers are racing to find ways to contain the outbreaks before ...

Officials said eggs produced after the onset of illness did not enter the food supply, and there are no signs of illness in ...

Health officials are making a renewed call for vigilance against bird flu, but some experts are puzzling over why reports of ...

Brazilian authorities hope to determine by Tuesday whether a confirmed outbreak of highly pathogenic avian influenza among ...