As restrictions ease in NSW, people are being urged to maintain COVID-safe practices as Brisbane deals with a cluster.

More than 20,000 people have been contacted by NSW Health after recent COVID-19 cases in Queensland, and nine have been deemed close contacts.

NSW Chief Health Officer Kerry Chant says anyone who has been in any affected hot spots in Brisbane since March 11 should isolate for two weeks and get tested.

Health authorities are closely monitoring northern NSW where there's "lots of contact" between locals living and working in border towns, she said.

With the Easter holiday break just days away, Dr Chant says her main message is "we're not out of COVID".

"We are rolling out the vaccine but we have a long way to go before a significant portion of the population is protected," she told Sydney radio 2GB on Monday.

Even though there has been an easing of restrictions it's critical that everyone maintains COVID-safe practices, Dr Chant says.

She urged anyone with even slight symptoms to get tested and stressed the importance of checking in with the QR code when visiting any venue.

"It does assist us greatly if we have an infectious person who has attended that venue," she said.

Meanwhile, restrictions on venues, dancing, singing and gatherings have significantly eased.

Masks are no longer mandatory anywhere in NSW, with commuters to decide for themselves if they need to wear one on public transport.

Big weddings and funerals are back with no limit on guest numbers, while dancing and singing is allowed in any environment.

There is no limit on the number of visitors allowed in homes, but a COVID-safe plan must be enacted if a gathering exceeds 100.

Up to 200 people are allowed at personal outdoor public gatherings, while entertainment venues can operate at 100 per cent seated capacity.


NSW COVID-19 RULES TO EASE ON MONDAY:

* No cap on numbers at weddings or funerals

* Masks on public transport no longer mandatory

* Dancing and singing allowed everywhere

* No caps on visitors in homes. If more than 100 people attend, there must be a COVID-19 safety plan and visitor details must be electronically recorded

* Up to 200 people allowed at personal outdoor public gatherings

* One person per two square metres at venues where more than 25 people are present

* Entertainment venues at 100 per cent seated capacity