It is a jump of more than 1500 cases on Friday's 5919 infections.

Another nine people - aged in their 60s, 70s, 80s and 90s - have died with the virus, taking the state's toll since the pandemic began to 1534.

The number of active cases reported in the most-recent 24-hour reporting period sits at 24,161, and 63,026 people were tested

There are 98 people in intensive care, including 51 actively infectious and 21 ventilated.

In total, there are 451 people in hospital and the seven-day average hospitalisation rate sits at 406.

There are currently more than 12,500 close contacts in isolation in Victoria.

Extreme heat on Saturday closed eight testing sites, while positive cases interrupted entertainment plans for many on New Year's Eve.

Moulin Rouge at Regent Theatre abruptly stopped a performance with 30 minutes to go on Friday due to a positive COVID-19 test result in the wider company.

Performances of Frozen The Musical at Her Majesty's Theatre have also been cancelled until at least January 5 after cases were detected among the company.

Victoria on Friday moved to new isolation and close contact rules in line with definitions agreed at national cabinet.

Positive cases in Victoria must inform their household and social contacts of their illness and can now isolate for seven days, rather than 10, regardless of vaccination status.

Household contacts of positive cases must also isolate for seven days and can use a rapid antigen test for the all-clear if they are not symptomatic, but must get a PCR test if they show symptoms.

Workplace and school contacts are no longer required to get a test and isolate until they receive a result.

International travellers now have the option of completing a rapid antigen test on arrival - as well as on day five to seven - but are no longer required to isolate.

Australian Associated Press