West Nile Virus - University of Washington
West Nile Virus
Classification:
• RNA virus
• genus: Flavivirus, family: Flaviviridae
• diameter: 40-60 nm. icosahedral and enveloped necleocapsid
Epidemiology:
• isolated in 1937
• widespread in Africa, Europe, Asia and Australia
• North America. The United States: in 1999
Pathology:
• incubation period: 3 and 14 days
• Three symptoms:
1. no symptoms in most people:
an asymptomatic infection, 80%
2. milder symptoms in some people:
West Nile Fever, up to 20%, incubation period of 2 to 8 days, resolved within 7 to 10 days
3. serious symptoms in a few people: fatal meningitis or encephalitis, about one in 150 people
|Encephalitis/Meningitis |Fever |Other Clinical/Unspecified |Total |Fatalities |
|508 |561 |39 |1108 |22 |
Total Human Cases Reported to CDC as of October 14, 2008
Transmission:
• Host: mainly birds but accidently infect mammals.
• amplified in birds
• the mammals are called dead-end infections
• vector: mosquito
• other transmission: exposure to infected blood, breastfeeding and even during pregnancy from mother to baby
Treatments
• no vaccine is available
• supportive care
Prevention
• Protect yourself from mosquito bites . Help reduce the number of mosquitoes in areas outdoors
• avoid bare-handed contact with dead animals[pic]
................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.
Related searches
- university of washington hr jobs
- university of washington jobs listing
- university of washington human resources
- university of washington human resources dept
- west nile virus prognosis
- university of washington baseball roster
- university of washington product management
- university of washington online mba
- university of washington printable map
- university of washington opioid taper
- university of washington opioid calculator
- university of washington program management