SUNRAYSIA residents have been urged to take up free Japanese encephalitis vaccines to protect them from the virus.

The region is one of 20 in Victoria considered at high risk of JE virus infection especially for people regularly spending time outdoors.

The call for at-risk communities to be vaccinated against the JE virus comes as the Department of Health launches a new campaign warning of the risks of mosquito-borne diseases, which will run across social media the support of healthcare providers like GPs, primary health networks and community pharmacists.

Victoria's Acting Health Minister Gabrielle Williams said Victoria's expanded JE vaccine eligibility would continue this summer during an increased mosquito presence.

"Now is the perfect time to get vaccinated against Japanese encephalitis virus -- it'll protect you ahead of this year's mosquito season," Ms Williams said.

"You can get your vaccination today through your immunisation provider including GPs, Aboriginal community-controlled organisations, community pharmacies or local council," she said.

Local Public Health Units, including Loddon Mallee, will also undertake work to raise public awareness and improve access to the vaccine.

Most people with JE virus infection do not show or have only mild symptoms -- but in extreme cases, it may lead to death or permanent comas.

Symptoms usually develop five to 15 days after being bitten by an infected mosquito.

Symptoms include fever, headaches and vomiting, while symptoms for severe infections can include severe headaches, neck or back stiffness, sensitivity to light, confusion, seizures, paralysis and comas.

The risks of infection from mosquito bites rises usually between November and March when there is an increased number of mosquitos.