The highly contagious and deadly avian influenza is spreading among poultry birds in canada, with government authorities tracking cases in 12 farms so far in ontario, nova. Highly pathogenic avian influenza (hpai) a (h5n1) virus is a strain of avian influenza that emerged in asia in the late 1990s affecting poultry flocks and occasionally infecting.
The avian influenza a(h5n1) virus is commonly found in birds in several countries in africa and asia, and more recently has spread to europe, north america (canada, the united. The canadian government is expanding its surveillance program for a form of avian flu amid a growing outbreak in u.s.
