On Tuesday 24 March 2020, our Prime Minister announced a total ban, with no exceptions, of all brothels, massage parlours (this includes unlicensed brothels), strip clubs, sex on premises venues (this includes gay saunas). The ban applies nation wide, covering all states and territories of Australia.

https://www.pm.gov.au/media/up...

The ban does NOT mention private sex workers or escort agencies. The new measures do NOT yet ban individuals from visiting someone else's house, providing it is a small gathering. To quote from the government's press release:

"Australians should stay at home, unless shopping for essentials, travelling to and from work - where you cannot work from home, going to school and exercising. Keep visitors to your home at a minimum. In outdoor spaces do not congregate in groups."