Bird flu is a disease caused by a specific type of avian (bird) influenza virus, the so-called H5N1 virus. This virus was first discovered in birds in China in 1997 and since then has infected 125 people in Vietnam, Cambodia, Thailand, and Indonesia, killing 64 of them. It is spread by infected migratory birds (including wild ducks and geese) to domestic poultry (primarily chickens, ducks, and turkeys), and then to humans.
Since 1997, and especially since the beginning of 2004, approximately 150 million birds have either died from the disease or been killed to prevent further spread. Nevertheless, this very infectious and deadly virus has spread relentlessly to China, Thailand, Cambodia, Vietnam, South Korea, Japan, Taiwan, Laos, Russia, Indonesia, Mongolia, Kaza View the rest of this article
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