NSW Health is urging residents to protect themselves against mosquito-borne diseases, after the Kunjin virus was detected in horses in parts of the Hunter. 

Dr David Durrheim, public health physician at Hunter New England Health, revealed the Kunjin virus had been detected in horses in Southern and Northern NSW,  including the Hunter Valley, indicating that Kunjin may be circulating in mosquitoes.

He said the virus had the potential to cause human infection. 

HNE Health’s Dr David Durrheim said there is no specific treatment for the virus. Photo source: HMRI

“It is important to be vigilant about protecting yourself from mosquito bites as mosquitoes can spread Kunjin and Murray Valley encephalitis viruses,” Dr Durrheim said.  

Kunjin and Murray Valley encephalitis virus infection are two rare but serious infections of the brain which can cause symptoms such as severe headache, neck stiffness, sensitivity to bright lights, drowsiness, confusion, and possible seizures. 

“There is no vaccine and no specific treatment for these viruses. The best way to avoid infection is to avoid being bitten by mosquitoes,” Dr Durrheim said. 

Health authorities are recommending residents cover up as much as possible when outside, use an effective insect repellent (containing Diethyl Toluamide, Picaridin or oil of lemon eucalyptus), cover all windows, doors and other entrances with insect screens and remove any water-holding containers outside the house where mosquitoes can breed. 

Whilst Kunjin is a virus originally found in birds, Mosquitos can transmit the virus after feeding on infected animals. Photo source: University of Newcastle.

Health authorities say the virus is spread by the bite of the common banded mosquito, Culex annulirostris, which breeds in fresh water and tends to be found in spring, summer and autumn around natural wetlands and irrigation waters.

While mosquito-borne, Kunjin virus is originally a virus of birdlife.

NSW Health said mosquitoes could become infected by feeding on infected birds and further transmitting the infection by biting humans and other animals.

If residents suspect they may have been exposed to the virus, securing a blood test is recommended to determine whether antibodies of the Kunjin virus are present.

For further information on the mosquito-borne disease and ways to protect yourself, go to the NSW Health website. 

Information source: Hunter New England Health.