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General Information on Avian Influenza

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This section provides background information about avian influenza (bird flu), including the viruses, and the risk to human health.

• Key Facts
  Information about Avian Influenza (Bird Flu) and Avian Influenza A (H5N1) Virus
• Flu Pandemics
  Information about previous pandemics (such as Spanish flu, Asian flu, & Hong Kong flu) & preparation for future pandemics
• Infection in Humans
  Instances of avian infection in humans, symptoms, treatment…
• Transmission Between Animals & People
  Subtypes of the virus, transmission, antigenic shift…
• Spread among Birds
  Birds as hosts, transmission, outbreaks…
• Flu Viruses
  Types, subtypes, and strains, influenza vs. avian influenza, how influenza viruses change…
• Avian Flu Viruses
  Includes information on subtypes A H5, A H7, A H9…

Navigation for the CDC Avian Flu Website

• Influenza (Flu)

• Avian Flu
  • What You Should Know
    • Key Facts
    • Current Situation
    • Infection in Humans
    • Q & A
  • Specific Topics
    • The Virus & Its Spread
    • Prevention
    • Outbreaks
  • Info for Specific Groups
  • References
  • Related Links
• Canine Flu
• Novel H1N1
• Pandemic Flu
• Seasonal Flu
• Swine Flu

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