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[West Nile virus (WNV) encephalitis].

E Bergogne-Bérézin1

  • 1West Nile Encephalitis in New-York City, Public Health Perpective (Marcelle Latyon, NY City Dept of Health, New-York).

Presse Medicale (Paris, France : 1983)
|January 13, 2001
PubMed
Summary

West Nile encephalitis, a severe viral infection, is re-emerging globally. This flavivirus is transmitted by mosquitoes, and currently, no antiviral treatments exist, making mosquito control crucial for prevention.

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Area of Science:

  • Virology
  • Epidemiology
  • Public Health

Context:

  • West Nile encephalitis, a flavivirus infection, has a history dating back to the 1930s.
  • While historically prevalent in Africa and Western Asia, it has seen recent reappearances in the United States and Israel, and a resurgence after disappearing from France in 1960.
  • The disease is transmitted to humans through the bite of infected mosquitoes that have acquired the virus from birds.

Purpose:

  • To provide an overview of West Nile encephalitis, including its causative agent, clinical manifestations, and epidemiological trends.
  • To highlight the severity of West Nile encephalitis, characterized by neurological symptoms and a significant fatality rate (10-15%).
  • To emphasize the lack of specific antiviral treatments and underscore the importance of preventive measures.

Summary:

  • West Nile encephalitis is a severe viral illness caused by a flavivirus, with an incubation period of 2-15 days.
  • Symptoms include fever, headache, body aches, rash, disorientation, stiff neck, convulsions, and paralysis, potentially leading to death.
  • No effective antiviral agents are currently available to treat West Nile virus infections.

Impact:

  • The re-emergence of West Nile encephalitis poses a significant public health challenge due to its severity and lack of specific treatments.
  • Effective mosquito control strategies are paramount for preventing transmission and mitigating outbreaks.
  • Increased surveillance and public awareness are essential for managing the global threat of West Nile encephalitis.

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