A man in his 50s has become the eighth NSW resident diagnosed with Japanese encephalitis (JE), as NSW Health announces it will move to a daily reporting system.
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.
Meanwhile, the number of confirmed JE cases in South Australia has grown to eight.
The Department of Health and Wellbeing said that includes one person who died earlier this month.
Of the remaining seven, five are still in hospital and two have been discharged.
A further two people in hospital remain under investigation.
"It is crucial that we all continue to take extra precautions against mosquitoes," executive director of health protection Chris Lease said.
"People planning activities around the River Murray are warned to be especially vigilant, particularly between dusk and dawn when mosquitoes are most active."
Australia has 24 confirmed cases of JE in humans: eight in NSW, seven in Victoria, eight in SA and one in Queensland.
Victoria, South Australia and NSW have each recorded a fatal case.
Most people who are infected with flaviviruses such as JE virus, Kokobera virus, West Nile virus, and Murray Valley encephalitis virus are asymptomatic or develop a mild fever.
A small proportion of infected people will develop encephalitis, which may be fatal or cause long-term neurological damage.
The virus, which has no specific treatment, can cause severe neurological illness, with headache, convulsions and reduced consciousness in some cases.
"It is important that people remain vigilant in protecting themselves against mosquito bites, particularly during periods of warmer weather when mosquito activity is high," Dr Lease said.
