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St. Louis encephalitis virus

St. Louis encephalitis virus (SLEV) is a member of the family Flaviviridae, genus Flavivirus. Other medically important flaviviruses found in the Americas include West Nile virus and Powassan virus. SLEV has a single-stranded, positive-sense RNA genome. The virus particles are spherical and have a diameter of 40 nm.

Page last reviewed: March 3, 2021
Content source: Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Division of Vector-Borne Diseases (DVBD)