NSW posted its first day in more than a week without a locally acquired coronavirus case.
Day zero came from more than 20,000 tests in the 24 hours to 8 p.m. Wednesday.
This is the first time since January 6 that NSW has not had any new COVID infections in the community.
There have been two infections in travelers returning from hotel quarantine.
Health Minister Brad Hazzard hailed Thursday day zero but urged people to continue to get tested for the virus.
“At first glance, it’s very positive that we don’t have any cases of local transmission,” he said.
“But it depends entirely on the number of cases that arise. We need people to come forward and be tested. It’s the weapon we all have.
Mr Hazzard said NSW authorities have traced 10 people affected by the cluster to the Grand Chancellor Hotel in Brisbane, which is under a health alert after six coronavirus infections were attributed to people on one floor. All are isolated and are tested.
Mr Hazzard said the situation was “being handled appropriately”.