Mosquitoes spread Japanese encephalitis virus. Illness is uncommon but ranges from mild to severe.
Protect yourself from mosquito bites to prevent Japanese encephalitis. A vaccine is also available.
Symptoms of Japanese encephalitis include fever, headache, and vomiting.
Infected mosquitoes spread Japanese encephalitis virus, mainly in Asia and the western Pacific.
Japanese encephalitis usually occurs in rural or agricultural areas in Asia and the western Pacific.
A Japanese encephalitis vaccine is approved for use in U.S. travelers aged 2 months and older.
For Professionals
Recommend the Japanese encephalitis vaccine for certain U.S. travelers with higher risk of exposure.
Consider Japanese encephalitis in patients with neurologic illness after travel-related exposure.
No medicines are available to treat Japanese encephalitis. Consider a vaccine for U.S. travelers.
Japanese encephalitis virus cycles through mosquitoes and vertebrate hosts.
Japanese encephalitis resources like CDC’s Yellow Book, vaccine guidelines, and travel information.