The latest case is a man from the Temora area in the NSW Riverina region, who was treated in hospital before being discharged.
He is continuing to recover in the community, NSW Health said in a statement on Friday.
A woman in her 40s from the Berrigan area in the Riverina region was the seventh person to be diagnosed with the virus on Wednesday.
She was treated in hospital before being discharged and is recovering at home.
The way cases of JE are announced will change from Friday onwards as the situation in the state evolves.
NSW Health will finalise new cases and locations at 4pm daily and report them the following day on the NSW Health website, similar to the way COVID-19 cases are published.
Japanese encephalitis is caused by mosquito bites and cannot be spread from human to human.Â
Despite cases being recorded in animals and pigs, the disease cannot be caught by eating pork or pork products.
There are no specific treatments for JE, which can cause severe neurological illness with headache, convulsions and reduced consciousness in some cases.
The best thing people can do to protect themselves and their families against JE is to take steps to avoid mosquito bites.
NSW Health recommends:
* Avoid the outdoors, bushland and wetlands at peak mosquito times - dawn and dusk
* Wear long sleeves and pants, socks and shoes
* Use insecticides (e.g. permethrin)
* Use and reapply repellent (e.g. DEET, picaridin, or oil of lemon eucalyptus)
* Use mosquito nets for children, and mosquito coils
* Empty and reduce all water-holding containers around your house.
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