Experts said it raises new questions about wider spread and the difficulty of controlling infections in animals and the people who work closely with them.

This virus has infected chickens, cattle, and people and caused egg prices to skyrocket. How worried should you be?A farmer standing among her chickens at a farm in California.By Kevin Loria, ...

U.S. dairy cattle tested positive for a strain of bird flu that previously had not been seen in cows, the U.S. Department of Agriculture said.

The USDA Animal and Plant Health Inspection Service (APHIS) recently confirmed the deadly bird flu genotype responsible for ...

The USDA also began testing of milk nationwide to address bird flu outbreaks in dairy herds. The spread of bird flu among poultry flocks in the U.S. is also causing a spike in egg prices.