The avian flu has crossed borders, and countries including Peru, Bolivia and Ecuador reported their first cases as the virus is becoming a global year-round problem threatening the world food supply.
According to experts, wild birds are responsible for the spread as some can carry the virus without dying and introduce it to poultry.
From the US to France and Britain to Japan, the avian flu already spread to several countries over the past year and caused record losses, but now the disease has become endemic.
Avian flu is a threat to poultry as the entire flock needs to be destroyed even if one bird tests positive.