For the fourth year in a row, highly pathogenic H7 avian flu has struck birds the United States.

A Lincoln County, TN, poultry farm that supplies Tyson Foods took the brunt of avian flu’s return, when 73,500 chickens had to be destroyed to prevent them from entering the food supply or spreading the virus. Another…

Live poultry sales are being shut down in China’s central Hunan province because one strain of bird flu has turned deadly for people. Americans are being cautioned about the outbreak, but are not being warned against travel to Hunan.

China is temporarily closing the live poultry markets in Hunan because five deaths are now attributed…