A growing number of felines have fallen sick. Though they have not transmitted the illness to people, scientists fear the virus could mutate in a way that makes zoonotic spread easier.

How does bird flu spread? Can people get bird flu? Bird flu can infect birds as well as mammals, including pigs, cattle and cats. People can also get infected when they come into

Denver health officials are once again reminding people to steer clear of sickly or dead fowl due to increasing attention in national media of highly pathogenic avian influenza.

A Mercer County farm worker came into contact with dead poultry that was infected with the disease, the state's health department reports.