OTTAWA - The Canadian government is expanding its surveillance program for a form of avian flu amid a growing outbreak in U.S. dairy cattle. Fragments of highly pathogenic avian influenza have been detected in pasteurized milk sold in the U.S. and a statement from Canada's health agencies says lactating dairy cattle being imported from the United States will now require negative tests. The statement says officials will be conducting enhanced testing of milk at the retail level to look for... Read this story