Japanese encephalitis virus (JEV) resources
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Japanese encephalitis virus (JEV) is a mosquito borne disease. It is possible for infected mosquitoes to spread the virus to people and some animals including pigs, horses and water birds.
While the emergency response has now ended, JEV remains a nationally notifiable disease that poses significant risk to pig health and can have possible human health implications.
JEV remains a nationally notifiable disease in humans and animals. This means if you suspect an animal is showing signs of the disease, you must report it.
You can do this by contacting your local herd or government veterinarian or by calling the national Emergency Animal Disease Watch Hotline on 1800 675 888.
To protect yourself and your staff, mosquito control measures need to be implemented in piggeries:
For further information on the JEV vaccination program, including eligibility; please contact your state or territory’s Department of Health.
The best way to prevent JEV infection in your herd is to reduce the number of mosquitos. Mosquitos breed very quickly in the right conditions. As far as possible, undertake the below actions.
Mosquito management that relies only on controlling adults is not effective or sustainable. An effective mosquito management program is only achieved by targeting all stages of the mosquito life cycle using a combination of methods. This is called integrated mosquito management, and it is the best way to reduce mosquitoes to protect workers and pigs. It requires a combination of:
If your herd becomes infected, the impact on pig production is manageable and is likely to be short-term if appropriate vector control takes place.
Key messages are:
Signs of JEV infection in pigs can include:
Note: not all of these signs will be seen at every affected farm.
Most infected pigs will not show any of these signs and will behave normally while carrying the virus. If you do have some animals behaving abnormally or have noticed large numbers of mosquitoes in your herd, be alert.
JEV is a nationally notifiable disease, if you suspect JEV is present in your piggery you must notify government within 24 hours.
To notify government, please contact either:
Federal and jurisdictional health agencies are monitoring the situation closely. For information relevant to your own jurisdiction, visit your state government agency via the links below: