Could bird flu in US livestock, poultry pose risk to humans?
Nations are buying H5N1 bird flu vaccines as the virus continues to spread among livestock in the US. Some experts say H5N1 ...
Concern grows over whether bird flu could lead to a pandemic: What to know
H5N1, a type of avian influenza, has led to a bird flu outbreak in humans the U.S. Will it cause a pandemic? Experts explain ...