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[Influenza pandemic--current crisis].

Makoto Ozawa1, Yoshihiro Kawaoka

  • 1Division of Virology, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo.

Kansenshogaku Zasshi. the Journal of the Japanese Association for Infectious Diseases
|March 8, 2006
PubMed
Summary

Avian influenza (H5N1) poses a significant threat with high mortality, despite reduced influenza deaths. Pandemic preparedness is crucial as H5N1 spreads globally.

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Area of Science:

  • Virology
  • Epidemiology
  • Public Health

Context:

  • Influenza is typically not fatal, with reduced mortality due to vaccines and antivirals.
  • The 1997 Hong Kong H5N1 outbreak highlighted the devastating potential of avian influenza in humans.
  • H5N1 avian influenza viruses are currently circulating widely in Asia and spreading to Europe, with a high mortality rate.

Purpose:

  • To review the current situation of avian influenza (H5N1).
  • To discuss the global spread and impact of H5N1.
  • To assess pandemic preparedness in light of emerging H5N1 threats.

Summary:

  • H5N1 avian influenza has a high mortality rate (over 50%) in confirmed human cases.
  • Existing vaccines for seasonal influenza (H3N2, H1N1) are ineffective against H5N1.
  • Emergence of H5N1 strains resistant to amantadine and oseltamivir is a growing concern.

Impact:

  • The potential for H5N1 to transmit efficiently among humans remains a critical pandemic threat.
  • Urgent need for enhanced global surveillance and pandemic preparedness strategies.
  • Highlights the limitations of current vaccines and antivirals against novel influenza strains.

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