Western equine encephalitis: Difference between revisions

Revision as of 22:18, 18 January 2009

Synonyms and Related Keywords: Mosquito-borne

Epidemiology and Demographics

639 confirmed cases in the U.S. since 1964.

Risk Factors

Epidemic disease that is difficult to predict
Residents of endemic areas and visitors
Persons with outdoor work and recreational activities
Risk exposure increases as population expands into endemic areas
Unknown overwintering cycle

Pathophysiology & Etiology

Western equine encephalitis virus, member of the family Togaviridae, genus Alphavirus. Closely related to eastern and Venezuelan equine encephalitis viruses.

History and Symptoms

Symptoms range from mild flu-like illness to frank encephalitis, coma and death.

Other Diagnostic Studies

Risk Stratification and Prognosis

Treatment

No licensed vaccine for human use
No effective therapeutic drug

Primary Prevention

Control measures expensive
Limited financial support of surveillance and prevention

Cost-Effectiveness of Therapy

Total case costs range from $21,000 for transiently infected individuals to $3 million for severely infected individuals
Insecticide applications can cost as much as $1.4 million depending on the size of area treated

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	Mosquito-borne		'''Synonyms and Related Keywords:''' Mosquito-borne

	==Epidemiology and Demographics==		==Epidemiology and Demographics==