The Health Department said 121 of these were linked to known cases and outbreaks, with more case information to be provided in Monday's daily briefing.

There are 1619 active coronavirus cases in Victoria.

The latest figures come as the Border remains on alert after two separate COVID-19 incidents on the weekend.

Murrumbidgee Local Health District on Sunday flagged the Shell service station as an exposure site, along with a Hume Highway roadhouse at Coolac.

Victorian COVID commander Jeroen Weimar also revealed a truck driver is isolating in Wodonga with COVID.

NSW recorded 1485 new positive cases and three new deaths on Sunday.

There are 1030 people in hospital with the virus in the state, including 175 in intensive care and 72 on ventilators. Three of those in ICU are children.

On Sunday Victoria recorded 183 new local cases. This includes a guard at a Melbourne detention centre that holds asylum seekers.

The ACT had 15 new cases and Queensland recorded one. New Zealand has recorded 20 new cases.

Children as young as five will need to be vaccinated against coronavirus to achieve herd immunity, according to new research.

Modelling from the Medical Journal of Australia shows the current mixed vaccination program will not be enough to protect the entire populous against COVID-19, until younger children between five and 16 can be fully vaccinated.

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