Japanese Encephalitis virus

Wednesday 9 March 2022

Japanese Encephalitis virus (JEV) has recently been detected in Victoria, and is a mosquito borne virus that can cause encephalitis in around one per cent of cases who become infected.

Most people who contract JEV will have no or very mild symptoms and fully recover, but if a sudden onset of fever, headache, vomiting as well as seizures or disorientation occurs, you should seek urgent medical attention.

With mosquito numbers high in many parts of Northern Victoria, there is an increased risk of infection, particularly for those that work or live on pig farms or work outdoors.   

A Japanese encephalitis vaccine is available and is recommended for those who work with or around pigs, including transport workers or vets who visit pig farms and those who cull or hunt pigs.

Children aged under 5 and older people who become infected with JEV are at a higher risk of developing more severe illness, such as encephalitis.

For more information visit the Department of Health Website

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