The positive case was believed to be an essential worker who had travelled from southern Sydney to work on a construction site at the Goulburn Hospital.

ACT Health have so far not made any changes to health or travel advice in response to the positive case.

Read more: Police crackdown as COVID strikes young people in Sutherland Shire

A spokesperson said on Tuesday morning it was in the process of establishing whether any of the workers were from the ACT and were now in Canberra.

"ACT Health will be working with NSW Health and the Southern Local Health District this morning to identify any impact this may have on the ACT," a spokeswoman said.

"We will provide the community with updated information and advice if required. In the meantime, we remind any Canberran who has recently travelled in NSW to check the ACT COVID-19 website for exposure sites and get tested if you have even the mildest of symptoms of COVID-19."

Queensland Premier Annastacia Palaszczuk confirmed the NSW case in Goulburn, about an hour north from the ACT, during her address on Tuesday morning.

She stopped short of closing the border between Queensland and NSW, saying health experts would be monitoring the situation closely.

NSW Premier Gladys Berejiklian will speak to the public this morning to provide an update on the coronavirus situation in the state.

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