Health authorities issued warnings and increased surveillance after the potentially deadly Japanese Encephalitis Virus (JEV) was detected in mosquitoes in Hemmant.
Health Authorities Confirm First JEV Detection in Brisbane
Queensland Health has confirmed that routine mosquito surveillance programs detected the presence of JEV in Hemmant. The discovery has raised concerns about the spread of the virus, particularly following the recent wet conditions brought by ex-Tropical Cyclone Alfred.
JEV virus spreads through mosquito bites. The virus is transmitted to mosquitoes after they feed on infected pigs or wading birds. Once infected, mosquitoes can pass the virus to humans through a bite.
Chief Health Officer Dr Heidi Carroll has urged residents to take precautions against mosquito bites. She discussed that most JEV-infected individuals experience mild or no symptoms. However, severe cases can result in fever, headaches, vomiting, and, in rare instances, life-threatening neurological complications.
Increased Risk Following Recent Flooding
The detection of JEV in Hemmant follows concerns that Queensland’s recent flooding has created the mosquitoes’ ideal breeding conditions. Dr Carroll emphasised that pooled water from the floods has contributed to rising mosquito populations. Residents are urged to eliminate standing water around their homes.
JEV has previously been detected in the Goondiwindi and North Burnett regions. The recent positive mosquito samples were also recorded in the Darling Downs and Wide Bay areas.
Preventative Measures and Vaccination Efforts
Queensland Health is ramping up efforts to connect impacted residents with JEV vaccinations. City official David Crisafulli assured there is no immediate cause for alarm. He also confirmed that they are working with health authorities to determine vaccine eligibility for at-risk groups.
The JEV vaccine is available at over 100 vaccination providers across Queensland, including selected general practitioners, pharmacies, and community immunisation centres. It is free for eligible Queenslanders; however, some providers may charge a consultation fee.
At-risk individuals are encouraged to vaccinate. These include piggery workers, veterinarians, and transport workers handling pigs. Prevention remains the best defence. Residents are advised to use mosquito repellents with DEET or picaridin. Wearing protective clothing and using insecticide vaporisers or coils outdoors is highly recommended.
What Happens Next?
JEV vaccination announcement for Brisbane residents should come soon from Dr Carroll. In the meantime, health officials continue to monitor mosquito populations. They will also conduct further surveillance to assess the extent of the virus’s spread. For more information on JEV and vaccine eligibility, visit the Queensland Health website.
Published 17-Mar-2025