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Threat of avian influenza pandemic grows, but people can take precautions

An editorial in the December issue of Mayo Clinic Proceedings paints a picture of a world population very susceptible to an avian flu pandemic, but also offers suggestions to physicians that could help answer questions presented by patients who may be feeling anxious about the "bird flu."

Many indicators suggest that the influenza A (H5N1) virus is closer to extending beyond Southeast Asia and into the worldwide population, write Priya Sampathkumar, M.D., Mayo Clinic Division of Infectious Diseases, and Dennis Maki, M.D., University of Wisconsin Medical School's Section of Infectious Diseases. They co-authored an editorial in the current issue of Mayo Clinic Proceedings.

The bird flu outbreak in Asia is caused by the "H5N1 virus," an influenza A virus subtype producing serious disease in domestic poultry. The co-authors note that recent genetic research on the influenza A virus responsible for the largest documented influenza pandemic on record -- the Great Influenza Epidemic of 1918 (the "Spanish Flu") -- shows that this virus was entirely of avian origin. The 1918 pandemic was the first confirmed bird flu outbreak in humans. Drs. Sampathkumar and Maki emphasize though that major genetic alterations in the current H5N1 virus must occur before rapid human-to-human spread, essential for a pandemic, is likely.

"If an avian flu pandemic were to occur this winter, we would not be adequately prepared to deal with it," says Dr. Sampathkumar. However, the co-authors say that quarantining methods, antiviral medications and other measures could help contain an outbreak at its earliest stages, if health professionals can ensure the following:

  • Very early identification of cases and efficient ongoing surveillance for new cases.
  • Sufficient stockpiles of antivirals, with the capacity for rapid delivery of antivirals to the target groups.
  • Rapid institution and enforcement of quarantine measures and a hig
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Contact: John Murphy
newsbureau@mayo.edu
507-284-5005
Mayo Clinic
5-Dec-2005


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