Ten new cases of COVID-19 were diagnosed in NSW between 8pm on June 22 and 8pm on June 23.
All ten of the new cases are returned travellers in hotel quarantine.
One previously confirmed case has been excluded after further testing, meaning the total number of cases in NSW is now 3,159.
A total of 13,278 tests were carried out, compared with 8,263 tests in the previous 24 hours.
More than three quarters of a million COVID-19 tests have now been carried out in NSW.
There are currently 47 COVID-19 cases being treated by NSW Health, with none in intensive care.
In NSW, 2,771 people are known to have recovered from COVID-19.
NSW Health strongly discourages travel to and from areas of Victoria with COVID-19 outbreaks until control of community transmission has been confirmed.
The Victorian Government has identified the local government areas of Hume, Casey, Brimbank,Moreland, Cardinia and Darebin as the focus of current outbreaks of concern.
"There are also locally acquired cases of COVID-19 reported from other areas of metropolitan Melbourne, so we urge anyone who is planning to visit Victoria to keep up to date with NSW
Health and Victorian Health travel advisories," a NSW Health spokesperson said.
Since March 29,163 symptomatic returned travellers have been tested in hotels, with 104
of those (3 per cent) found positive.
Travellers are also screened on day 10 of quarantine. Since this screening began on May 15, 10,402 returned travellers have been screened on day 10 of quarantine with 51 found positive.
To minimise the risk of virus transmission it is essential that people who have been directed into home isolation and quarantine arrangements follow these directions, and that everyone continues to maintain physical distancing of 1.5 metres and regularly wash their hands.
Confirmed cases (incl. Interstate residents in NSW health care facilities) 3,159
Deaths (in NSW from confirmed cases) 50
Cases reported recovered 2,771
Total tests carried out 756,240
NSW Health is urging anyone feeling unwell - even with the mildest of symptoms such as a runny nose or scratchy throat - to practice good hygiene by coughing and sneezing into their elbow or a tissue, washing their hands regularly, isolate themselves from others and to seek testing via their GP or by visiting one of the COVID-19 testing clinics.
A full list of COVID-19 testing clinics is at www.health.nsw.gov.au/Infectious/covid-19/Pages/clinics.aspx
