The single case was recorded from more than 13,000 tests in NSW in the 24 hours to 8pm on Friday.

It was that of a previously reported teen who attended Flip Out Prestons Indoor Trampoline Park at Prestons at the same time as a known case.

The teen is also a student at Cabramatta High School, which is closed for deep cleaning over the weekend.

No new cases were recorded in the 24 hours to 8pm on Thursday and only nine cases have been recorded in the last week, all bar one of which have been traced to a source.

Queensland Premier Annastacia Palaszczuk on Friday announced travel restrictions will ease from 1am on Tuesday, with the state's border to open to everyone but those in greater Sydney and Victoria.

Queensland Chief Health Officer Jeannette Young on Friday praised NSW's contact tracing and testing regime and said she planned to let Sydneysiders into the state but changed her mind after another mystery COVID-19 outbreak.

Dr Young said there was "a strong possibility" Queensland would open to Sydney once NSW was on top of the community outbreaks.

But NSW Premier Gladys Berejiklian said that isn't good enough and there is no reason Sydneysiders shouldn't be able to travel to Queensland now.

She said the lengths Queensland and WA have gone to is beyond the realm of logic and is hurting families, individuals and businesses.

Australian Associated Press