The early symptoms of avian influenza are remarkably similar to influenza (the "flu"). A patient with respiratory failure from avian influenza. Chest X-ray: A) patchy infiltration at bilateral lower lung fields. B) 24 hours later, shows rapidly progressive pneumonia in both lung fields, compatible with adult respiratory distress syndrome.
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Bird Flu (Avian Influenza H5N1, Avian Flu)  Information for adults

Picture of Bird Flu (Avian Influenza H5N1, Avian Flu): The early symptoms of avian influenza are remarkably similar to influenza (the "flu"). Divider line
The early symptoms of avian influenza are remarkably similar to influenza (the "flu").
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Signs and Symptoms
Avian influenza causes a flu-like illness.

Mild symptoms include:
  • Fever
  • Cough
  • Feeling generally weak and achy (malaise)
    Sore throat
More severe symptoms include:
  • Pneumonia
  • Respiratory failure
  • Death
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Last Modified: 22 Dec 2008
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