St. Louis encephalitis is caused by St. Louis encephalitis virus (SLEV). It 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.
What causes St. Louis encephalitis?
St. Louis encephalitis is caused by St. Louis encephalitis virus (SLEV). It is a member of the family {{ORGANIZATION}}, genus {{ORGANIZATION}}. Other medically important flaviviruses found in the Americas include West Nile virus and Powassan virus. {{ORGANIZATION}} has a single-stranded, positive-sense {{ORGANIZATION}} genome. The virus particles are spherical and have a diameter of 40 nm.