One new infection has been discovered in hotel quarantine, a woman in her 40s.

One case initially found to be a low positive was rejected after review by the state's Expert Review Panel, Victorian Chief Health Officer Brett Sutton said in a statement on Saturday.

It has been deemed negative based on clinical, epidemiological and testing evidence.

Almost 6000 people were tested in Victoria on Saturday.

Prof Sutton thanked the Victorian community for being tested in higher numbers than expected in the wake of Sydney's northern beaches cluster, which now numbers more than 100 cases.

He encouraged them to remain vigilant and seek testing with even the mildest of symptoms.

Testing sites are operating in tourist hotspots Torquay, Lorne and the Mornington Peninsula. Some testing sites have reduced hours over the holiday period.

The NSW-Victoria border remains shut and those who have been in Greater Sydney or the NSW Central Coast since December 11 are barred entry.

"Anyone arriving at the road border from those impacted areas will be turned away and will have to find alternative accommodation in NSW," Prof Sutton said on Sunday.

There are currently 10 active COVID-19 cases in Victoria, nine of which are in hotel quarantine and the 10th in isolation at home.

Australian Associated Press