Avian (or bird) Influenza is caused by influenza viruses that occur naturally among wild birds. The currently circulating H5N1 strain is deadly to domestic fowl (i.e., chicken, turkeys) and can be transmitted from birds to humans. There is no human immunity and no vaccine is available.

More on Avian Influenza

• Frequently Asked Questions About Avian Influenza
  [English pdf 46k] [Español pdf 20k]
• Avian Influenza Public Health Fact Sheet
  [English pdf 48k] [Español pdf 60k]
• Avian Influenza in Cats (H5N1) - 3/14/06 [pdf 96K]
• Questions and Answers from the U.S. Centers for Disease Control and Prevention
• Questions and Answers on Avian and Pandemic Influenza from the U.S. Dept. of Health & Human Services
  

For Health Care Professionals

• Health Care Provider Fact Sheet – 11/05 [pdf 124k]
• Guidance for Health Officers: Public Reports of Bird Mortality [pdf 33k]
• Surveillance and Testing of Avian Influenza A [pdf 200k]