Three were in quarantine for their full infectious period, four were infectious in the community and the status of two is under investigation.

Eight cases have been linked to existing cases, and the source of one is under investigation. Two are linked to household contacts.

There are now 176 active cases in the territory, as of 8pm Tuesday.

There are now seven people in hospital. A woman in her 40s, who is unvaccinated, is in intensive care and her condition is serious.

It's been almost two weeks since Canberra was locked down and ACT Chief Minister Andrew Barr said the territory would not finish its lockdown early.

The current lockdown is due to finish on September 2, and Mr Barr said chief health officer Dr Kerryn Coleman would review the restrictions for the week ahead.

"What we've seen in our own outbreak, and what's playing out around Australia and around the world is just how quickly one positive case turns into hundreds than thousands in a community," Mr Barr said.

"Today's case update together with the data that we have from the last 13 days, regrettably means that we are not in a position to end lockdown."

However, Mr Barr said some easing of restrictions was being considered and the changes would "seek to balance risk across the community".

He said any changes would be announced before the weekend.

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There were 6695 tests conducted on Tuesday.

Deputy chief health officer Dr Vanessa Johnston said there were 10,800 self-identified contacts in quarantine and more than 5000 casual contacts.

The number of cases reported on Wednesday was drastically down from the 30 reported on Tuesday. However, Dr Johnston said this didn't mean it was on a downward trend.

"I wouldn't be surprised if we have a double-digit [case number] again tomorrow," she said.

There are now more than 400 exposure sites across the ACT.

Another public transmission site has been added, with transmission confirmed at CIT Reid, there have been two cases associated with the campus.

There are 40 cases linked to Lyneham High School, 31 linked to Fiction Nightclub, 33 to Southern Cross Basketball Stadium, 15 to the Lennock Jaguar dealership, 12 to Downer Community Centre, four to Assembly bar and two to Gold Creek School.

One more case was linked to the disability care sector cluster.

Thousands of close contacts are preparing to exit quarantine. This is expected to push extra pressure on the ACT's testing sites in the coming days.

Dr Johnston said a dedicated phone line would be set up for people leaving quarantine to get advice.

"We've been receiving feedback overnight that some people have not received or being contacted by ACT health, about arrangements for coming out of quarantine," she said.

"We've set up a dedicated option on our phone line for those close contacts who believe they're eligible for release from quarantine but are yet to hear from ACT Health."

The number is expected to be publicised shortly.

Vaccination rates have also jumped in the ACT. The territory now is the highest proportion of fully inoculated residents, with 37.57 per cent of the over-16 population receiving two doses of either Pfizer or AstraZeneca.

Mr Barr confirmed that more than 17,000 Canberrans aged between 16 to 29 years have registered for their Covid vaccine, after this was opened to those age groups on Monday.

However, the Chief Minister reaffirmed that 16 to 29 year olds should talk to their health professionals about getting the AstraZeneca vaccine.

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