Epidemiology: SLEV

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The page below is a sample from the LabCE course Mosquito-Borne Viral Diseases. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Epidemiology: SLEV

The number of cases is the United States varies year by year with periodic outbreaks. Most cases occur in the southeastern and central US, with some in the western states. Cases are most prevalent in the summer and early fall but may occur year round in the South. Cases are rarely seen outside the US.
People who work or play outdoors are most at risk. Older persons are most at risk for death. The case fatality rate ranges from 5 to 15%. The graph below shows cases of St. Louis encephalitis neuroinvasive disease reported between 2008-2017 by ArboNET/CDC.

St. Louis encephalitis virus neuroinvasive disease cases reported by state of residence, 2008–2017