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Japanese encephalitis (JE) virus is caused by the bite of an infected mosquito and is closely related to the West Nile Virus and Saint Louis encephalitis virus. JE is found in many countries of Asia. For travelers to Asia, the risk is low but this varies on destination, length of travel, season, and activities.


For information on how to report a disease click here. For any questions, please contact the appropriate health authority by phone or review the website for additional information.

Carson City, Douglas and Lyon Counties
Carson City Health & Human Services (CCHHS)
(775) 887-2190

Clark County
Southern Nevada Health District (SNHD)
(702) 759-1300

Washoe County
Washoe County Health District (WCHD)
(775) 328-2447

All Other Counties
Nevada Division of Public and Behavioral Health (DPBH)
(775) 400-0333