Japanese Encephalitis Virus Detected in Brisbane for the First Time

Health officials warn of increased risk following recent flooding and urge precautions against mosquito bites.

Japanese encephalitis virus (JEV), a potentially deadly mosquito-borne disease, has been identified in Brisbane mosquitoes for the first time, raising concerns about its spread in Queensland.
Recent flooding caused by ex-Tropical Cyclone Alfred has created ideal conditions for mosquito breeding, increasing the risk of JEV transmission across affected regions.
While most JEV cases are mild or asymptomatic, severe infections can cause brain inflammation, seizures, permanent disability, or death in rare cases.
Health authorities recommend preventive measures such as wearing protective clothing, using insect repellents, removing standing water, and staying indoors during peak mosquito activity times.
Free vaccinations are available for high-risk groups, including piggery workers and residents near pig populations, with over 18,000 Queenslanders already vaccinated since 2022.