St. Louis encephalitis is a viral disease caused by St. Louis encephalitis virus (SLEV). Most individuals that are infected will have no signs of illness. Symptoms can include:
- fever
- headache
- nausea
- vomiting
- tiredness
Some individual may go on to have a severe neuroinvasive disease which will most commonly include encephalitis. This severe disease occurs most commonly in older adults.
St. Louis encephalitis virus is endemic in Arizona.
Transmission
Transmission occurs when an individual is bitten by an infected mosquito.
Transmission occurs when an individual is bitten by an infected mosquito.
Incubation period is 5 to 15 days.
Isolation Precautions
Standard precautions are recommended in healthcare settings.
Standard precautions are recommended in healthcare settings.
Prevention for Patients
The best way to prevent infection is to avoid being bitten by mosquitoes. Methods include:
The best way to prevent infection is to avoid being bitten by mosquitoes. Methods include:
- Wearing long pants and long-sleeved shirts
- Using insect repellent
- Using screens in windows or doors
Public Health Actions
Public health will conduct an epidemiological investigation on a case or suspect case.
Public health will conduct an epidemiological investigation on a case or suspect case.
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