St. Louis encephalitis is a mosquito-borne infection. This disease can affect the central nervous system, causing severe complications and even death.

The Central Nervous System
si1210_97870_1_central_nervous
Copyright © Nucleus Medical Media, Inc.

St. Louis encephalitis is caused by a virus. Mosquitoes are infected with this virus when they feed on birds. Infected mosquitoes can transmit the virus to humans and animals. St. Louis encephalitis is not spread from person to person.