Two of those cases are said to have been acquired in Australia, the rest comes from abroad.
Health authorities are concerned that the virus is being transmitted locally, which has warned residents to watch for symptoms, especially for men who have sex with men.
“People should be aware of the symptoms of monkeypox, including fever, headache, body aches and rash or lesions on the genital area,” said NSW Health Executive Director of Health Protection Dr Jeremy McAnulty.
“Until now, in the cases we’ve seen in NSW, monkeypox doesn’t present as some people expect, such as an extensive rash or lesions all over the body.
“It could be just a few pimples in the genital area or the buttocks, so people should pay close attention to possible symptoms. Most of our cases so far have been referred to sexual health clinics rather than GPs.”
Monkeypox is endemic to part of Africa, but as of May this year, thousands of cases have been reported from non-endemic countries.
Many of the cases are in men who have sex with men.
The World Health Organization (WHO) said the symptoms of monkeypox are “very similar to those seen in the past in smallpox patients, although it is less severe clinically”.
It is transmitted to humans through close contact with an infected person or animal, according to the WHO.
Monkeypox infection is determined by testing the blister fluid or scabs of a skin rash that often occurs within two weeks of exposure to the virus.
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