Bird flu (avian influenza)


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Symptoms

By Mayo Clinic staff

Signs and symptoms of bird flu typically begin within two to five days of infection. In most cases, they resemble those of conventional influenza, including:

  • Cough
  • Fever
  • Sore throat
  • Muscle aches

Some people also experience nausea, vomiting or diarrhea. And in a few cases, a mild eye infection (conjunctivitis) is the only indication of the disease.

When to see a doctor
See your doctor immediately if you develop a fever, cough and body aches, and have recently traveled to a part of the world where bird flu occurs. Be sure to let your doctor know if you visited any farms or open-air markets.

Causes Definition
References
  1. Key facts about avian influenza (bird flu) and highly pathogenic avian influenza A (H5N1) virus. Centers for Disease Control and Prevention. http://www.cdc.gov/flu/avian/gen-info/facts.htm. Accessed Sept. 21, 2011.
  2. Jones K. Influenza, avian. In: Ferri FF. Ferri's Clinical Advisor 2011: Instant Diagnosis and Treatment. Philadelphia, Pa.: Mosby Elsevier; 2011. http://www.mdconsult.com/books/about.do?eid=4-u1.0-B978-0-323-05610-6..C2009-0-38600-6--TOP&isbn=978-0-323-05610-6&about=true&uniqId=230100505-53. Accessed Sept. 21, 2011.
  3. Avian influenza: Fact sheet. World Health Organization. http://www.who.int/mediacentre/factsheets/avian_influenza/en/index.html. Accessed Sept. 21, 2011.
  4. Treanor JJ. Avian influenza. In: Mandell JE, et al. Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases. 7th ed. Philadelphia, Pa.: Churchill Livingstone Elsevier; 2010. http://www.mdconsult.com/books/about.do?about=true&eid=4-u1.0-B978-0-443-06839-3..X0001-X--TOP&isbn=978-0-443-06839-3&uniqId=230100505-57. Accessed Sept. 23, 2011.
  5. Stephenson I. Avian influenza vaccines. http://www.uptodate.com/home/index.html. Accessed Sept. 23, 2011.
  6. Stephenson I. Clinical manifestations and diagnosis of avian influenza. http://www.uptodate.com/home/index.html. Accessed Sept. 23, 2011.
  7. What consumers need to know about avian influenza. Food and Drug Administration. http://www.fda.gov/Food/ResourcesForYou/Consumers/ucm085550.htm. Accessed Sept. 23, 2011.
  8. Stephenson I. Epidemiology, transmission and pathogenesis of avian influenza. http://www.uptodate.com/home/index.html. Accessed Sept. 23, 2011.
  9. Cumulative number of confirmed human cases of avian influenza A(H5N1) reported to WHO. http://www.who.int/influenza/human_animal_interface/H5N1_cumulative_table_archives/en/index.html. Accessed Sept. 23, 2011.
  10. Key facts about influenza (flu) and flu vaccine. Centers for Disease Control and Prevention. http://www.cdc.gov/flu/keyfacts.htm. Accessed Sept. 23, 2011.
  11. Questions and answers about avian influenza (bird flu) and avian influenza A (H5N1) virus. http://www.cdc.gov/flu/avian/gen-info/qa.htm. Accessed Sept. 23, 2011.
  12. Stephenson I. Treatment and prevention of avian influenza. http://www.uptodate.com/home/index.html. Accessed Sept. 23, 2011.
  13. H5N1 influenza virus vaccine questions and answers. Food and Drug Administration. http://www.fda.gov/BiologicsBloodVaccines/Vaccines/QuestionsaboutVaccines/ucm080753.htm. Accessed Sept. 23, 2011.
DS00566 Jan. 26, 2013

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