The ACT is now Australia's most vaccinated jurisdiction with more than 87 per cent of all Canberrans aged 12 or over double jabbed.
The territory's latest new case count also dipped to single figures for the first time in a month on Sunday, with nine COVID-19 infections reported.
However the result coincides with testing numbers falling away, with just 991 samples processed in the 24 hours to Saturday evening.
It was the first time less than a thousand tests have been conducted in the ACT since the start of the outbreak.
Two weeks ago, more than 3500 tests were being conducted on a Saturday.
The drop-off is likely due to changes in exposure location reporting since the territory began easing restrictions.
As of Sunday evening, the ACT had 390 active cases from the 1586 infections reported for this current outbreak.
There were 20 virus patients in Canberra hospitals, including 11 in intensive care units and four requiring ventilation.
ACT Health is expected to provide full epidemiological update on the COVID-19 situation on Tuesday.
Australian Associated Press