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Avian Influenza Information

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Avian Influenza (National Wildlife Health Center and USDA):

• USDA - Questions and Answers: Avian Influenza (March 2007)
• USDA Key Messages for Avian Influenza (Scenario 1 - U.S.)
• USDA Key Messages for Avian Influenza (Scenario 2 - wild birds)

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Interesting Facts

• Avian influenza virus is divided into (2) groups which is based on the virus’s ability to produce disease and the severity of the illness it causes:
• Highly Pathogenic Avian Influenza (HPAI) = spreads rapidly and results in high mortality in birds
• Low Pathogenic Avian Influenza (LPAI) = causes only minor illnesses and occurs naturally in migrating waterfowl
• *Possibility that some LPAI virus strains are capable of mutating into HPAI viruses are of great concern
• LPAI viruses are not considered to be foreign or exotic because they occur naturally in North America
• Avian Influenza not only infects wild populations of birds such as shorebirds and waterfowl but they also infect domestic poultry (chickens, turkeys, geese, ducks, etc.) and have a zoonotic strain that can infect human populations!

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