Stephen J. Schueler, M.D.

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Western Equine Encephalitis Types

Eastern Equine Encephalitis
Eastern equine encephalitis occurs in the US, east of the Rocky mountains. It mainly affects young children and people over 55 years of age. This form has a higher mortality rate than the western variety.

Western Equine Encephalitis
The western equine encephalitis virus occurs throughout the US in all age groups. For an unknown reason, a high proportion of infections occur in children less than 1 year old.

Venezuelan Equine Encephalitis
This form of encephalitis is found from Florida through South America. At least 8 types of this virus have been identified.

Continue to Western Equine Encephalitis Anatomy

Last Updated: Dec 10, 2010 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed Western Equine Encephalitis References
  1. Aguilar PV, Greene IP, Coffey LL, et al. Endemic Venezuelan equine encephalitis in northern Peru. Emerg Infect Dis. 2004 May;10(5):880-8. [15200823]
  2. Deresiewicz RL, Thaler SJ, Hsu L, Zamani AA. Clinical and neuroradiographic manifestations of eastern equine encephalitis. N Engl J Med. 1997 Jun 26;336(26):1867-74. [9197215]
  3. Estrada-Franco JG, Navarro-Lopez R, Freier JE, et al. Venezuelan equine encephalitis virus, southern Mexico. Emerg Infect Dis. 2004 Dec;10(12):2113-21. [1566384]
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