Mosquitoes aren’t just a nuisance – some also carry diseases that can make you really sick. The risk of mosquito-borne diseases is increasing in NSW due to the warm, wet weather forecast. This summer it’s important to take extra steps to protect yourself and your family by keeping mosquitoes away – Spray up, Cover up, Screen up and Clean up!

Bite prevention

Bite prevention

Your best protection against mosquitoes and the diseases they carry is to avoid mosquito bites.

Know how to prevent bites – Spray up, Cover up!

Mosquito Prevention

Mosquito reduction

Reducing the number of mosquitoes around you can prevent mosquito bites.

Reduce the number of mosquitoes around your home or business at least once a week – Screen up, Clean up!



Most mosquito-borne diseases found in NSW don’t have vaccines so it is important to protect yourself against mosquito bites.

Japanese encephalitis virus (JEV) is the only vaccine-preventable mosquito-borne disease in NSW.

Mosquito-borne diseases

Mosquitoes can transmit serious diseases that are spread to humans through mosquito bites. A number of mosquito-borne diseases have been identified in NSW, most recently Japanese encephalitis (JE).

JE is a rare but serious disease caused by the Japanese encephalitis virus (JEV) that is spread to humans by infected mosquitoes. Humans and animals are not able to pass JEV to other humans.

Click the button below to learn more about JEV in NSW. 

Mosquito-borne diseases in NSW

Current as at: Monday 21 November 2022
Contact page owner: Communicable Diseases