This has prompted warnings around the country about mosquito borne diseases, which can include the potentially serious Japanese encephalitis.
Before the 2021-2022 mosquito season, JEV had rarely been found in Australia with previous cases only in Northern Australia, Cape York and the Torres Strait.
But in that outbreak, Berrigan Shire and Murray River Council were listed as areas of possible exposure for the 13 cases registered with NSW Health. This number included two deaths.
As a result, residents of the councils - and neighbouring councils like Edward River and Murrumbidgee - were considered high risk areas and their residents offered free vaccination.
This free access to vaccines for eligible residents is still available, and NSW Health strongly encourages people to take advantage of it.
It is considered safe and effective for people aged two months and older, and is recommended for those at the highest risk of catching Japanese encephalitis.
Japanese encephalitis is a rare but serious illness, with the most serious cases causing lifelong neurological complications or even death.
Most people who get Japanese encephalitis do not have any symptoms, but common symptoms do include fever, headache and vomiting.
People with a severe infection (1 in every 250 people) may get symptoms such as neck stiffness, disorientation, tremors, seizures and paralysis, or may go into a coma.
If you get these symptoms, contact a doctor right away, or Healthdirect on 1800 022 222.
In an emergency, call Triple Zero (000) or visit your nearest emergency department.
For more information on JEV and other mosquito borne diseases - Ross River virus, Murray Valley encephalitis, Kunjin virus or Barmah Forest virus - go to www.health.nsw.gov.au/Infectious/mosquito-borne.
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