About 3500 people are expected to be vaccinated by Canberra Health Services by the end of the week.

It came as Canberra health care workers received their second dose of the Pfizer vaccine at the Garran Surge Centre on Monday.

There was a sense of deja vu for nurse Maddy Williams as she fronted the media for a second time to receive her second dose of the vaccine.

Ms Williams was the first Canberran to be fully immunised against COVID-19 via the two-dose Pfizer vaccine after receiving her first jab on February 22.

"[The first dose] was problem-free," Ms Williams said.

"The only thing was soreness on the injection site, but that's the same as what I get with the flu vaccine.

"I feel really relaxed to know I'm fully immunised, especially as I work in a healthcare environment and [I'm] working with people in the community at higher risk."

Garran Surge Centre's executive director of technical services Cathie O'Neill said the centre had received an additional supply of vaccines over the weekend that would allow the centre to triple its capacity.

Ms O'Neill said Monday was the busiest day of the vaccination rollout so far. About 500 people got the jab.

"We're really getting into a groove," Ms O'Neill said.

"This surge centre is truly going to surge this week."

Ms O'Neil said she was pleased with the progress of the vaccination rollout in the ACT.

"We've still got a long way to go in terms of the pandemic," she said.

"I do think we've done it pretty well, but we need to accept [we have] a smaller population here.

"I don't think I'd want to take on the logistics of NSW or Victoria."

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In the first two weeks of the rollout, the ACT government administered 3360 vaccines.

But that figure did not include the number of staff and residents of aged care facilities because the federal government manages those vaccinations.

Meanwhile, freedom beckoned for 138 passengers of a repatriation flight from Singapore who were able to leave hotel quarantine on Monday night.

However, eight people will remain in quarantine at the Pacific Styles Hotel.

This includes five people who tested positive to the virus and three people deemed close contacts to those patients.

ACT has five active cases of the virus with all cases in hotel quarantine.

NSW broke its 55-day streak of zero COVID cases after a worker at two Sydney quarantine hotels tested positive. ACT Health has urged any ACT residents who visited Pancake on the Rocks, Beverly Hills on March 13 between 10.45am - 12pm to contact ACT Health on (02) 6207 7244, immediately get tested for COVID-19 and quarantine for 14 days regardless of the result.

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