Japanese encephalitis (JE) is a mosquito-borne flavivirus that can cause severe brain inflammation. After decades as a travel-only concern for Australians, JE was detected in Victorian piggeries and surrounding communities in 2022 and has remained a real local risk, particularly around the Murray.
State-funded eligibility (Vic)
Free JE vaccination is available for Victorians who meet specified criteria, including:
- Workers at piggeries or other settings with feral pig or mosquito exposure in declared local government areas.
- Researchers and laboratory workers handling JE virus.
- Some travellers and residents based on regional outbreak risk, as defined by the Department of Health.
The list is reviewed regularly. Your immuniser will confirm against current eligibility before the dose.
Travellers
JE is endemic across much of rural Asia. Travellers headed for extended stays, or to regions with active transmission during rainy season, are routinely advised to vaccinate. The schedule is two doses 28 days apart, ideally completed at least a week before departure.
Prevention beyond the vaccine
Vaccination is one layer. Insect repellent, long sleeves at dusk, and protected sleeping (screens, nets) are the other layers. Together they substantially reduce risk.
Sources & further reading
General information only. This article is educational and is not a substitute for personal medical advice. Your immuniser will confirm eligibility and contraindications on the day.
TGA advertising compliance. Vaccines are referred to by disease or category in line with the Therapeutic Goods Advertising Code. Specific brands and registered indications are discussed at the consultation.