St. Louis encephalitis alert in southern California, USA

Following the death of a patient with St. Louis Encephalitis virus in Kern County, health authorities have warned people to avoid mosquito bites.

Visit our Health Library for more information on exposure to and the prevention of Encephalitis.

Advice For Travellers

Sporadic infections with this virus occur in southern California. The virus is transmitted by the same mosquito that transmits West Nile Fever. This year, the virus has also been found recently in mosquito samples in Los Angeles, Orange, Riverside, San Bernardino and Kern counties. Since there is no vaccine or treatment for St. Louis encephalitis, travellers to areas where this virus has been found can reduce their risk of exposure by taking all necessary precautions to avoid mosquito bites.