Which less-common arboviruses have caused aseptic meningitis in the US?

Updated: Jul 16, 2019
  • Author: Rodrigo Hasbun, MD, MPH; Chief Editor: Michael Stuart Bronze, MD  more...
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Other less common arboviruses include St Louis encephalitis virus, Jamestown canyon virus, La Crosse encephalitis virus, Powassan encephalitis virus, and Eastern equine encephalitis virus. In the United States, the last epidemic of St Louis encephalitis was in Monroe, Louisiana, in 2001; 63 cases were reported, with 3 deaths (4.7% mortality). Infection with the La Crosse encephalitis virus also usually occurs during the summer and early fall, with symptoms again being typical of acute aseptic meningitis. [13]

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