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West Nile viral encephalitis.

N Komar1

  • 1Centers for Disease Control and Prevention/National Center for Infectious Diseases/Division of Vector-Borne Infectious Diseases, P.O. Box 2087, Fort Collins, Colorado 80522, USA.

Revue Scientifique Et Technique (International Office of Epizootics)
|February 24, 2001
PubMed
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West Nile virus (WNV) poses a significant threat, causing fatal encephalitis in humans and animals. Recent outbreaks highlight its emergence in Europe and North America, impacting public and animal health.

Area of Science:

  • Veterinary Medicine
  • Epidemiology
  • Public Health

Background:

  • West Nile virus (WNV) is an emerging mosquito-borne flavivirus impacting temperate regions.
  • WNV infection can lead to severe neurological disease, including fatal encephalitis in humans and horses.
  • The virus also causes mortality in various domestic and wild bird species.

Purpose of the Study:

  • To review basic information on West Nile virus.
  • To summarize recent epidemiological and epizootiological developments of WNV.
  • To highlight the impact of recent WNV outbreaks.

Main Methods:

  • Literature review of WNV epidemiology and epizootiology.
  • Analysis of recent outbreak data, including affected species and geographic distribution.

Related Experiment Videos

  • Synthesis of current understanding of WNV transmission and impact.

    • Main Results:

    • WNV has emerged as a significant public and animal health concern in Europe and North America.
    • A severe outbreak in New York City demonstrated WNV's potential for widespread mortality across species, including humans, horses, cats, and corvids.
    • Corvidae (crows) were particularly affected, indicating their role in WNV epizootiology.

    Conclusions:

    • West Nile virus represents a growing threat requiring continued surveillance and research.
    • Understanding WNV epizootiology is crucial for effective public and animal health strategies.
    • Recent outbreaks underscore the need for preparedness and response to mosquito-borne diseases.