Australia's acting chief medical officer, Professor Michael Kidd on Saturday said there was no need to pause or restrict the rollout of the AstraZeneca vaccine.

Authorities believed the case of a 44-year-old Melbourne man who developed a rare blood clotting disorder was "likely" linked to the jab. But no cause-and-effect relationship had been established.

Related: AstraZeneca vaccine rollout to continue

It was the sole reported case of clotting from the more than 400,000 doses of the vaccine administered in Australia at that point.

Professor Kidd reiterated the expert advice that the benefits of taking up the coronavirus vaccine outweighed the risks.

The man reportedly received the jab on March 22. He had been admitted to the Box Hill hospital.

Health minister Greg Hunt on Sunday said the Australian Technical Advisory Group on Immunisation, the Therapeutic Goods Administration, Australia's deputy chief medical officer, the Australian Health Protection Principal Committee, and the Thrombosis and Haemostasis Society had all reviewed Australia's vaccination program.

Mr Hunt said the experts had recommend continued investigation, but reaffirmed their commitment to the safety and the belief of the ongoing and unchanged nature of the vaccination program.

"So we'll just continue to review, as we do, but I think this week's results are very heartening," Mr Hunt said.

Related: New blood clot warning as TGA investigates Victorian case

Thursday marked a national record for COVID-19 vaccinations, with 79,283 doses administered.

A total of 841,885 vaccinations had been administered, nationwide, as of Saturday evening.

Mr Hunt on Sunday said vaccinations were set to increase significantly over the course of the coming week, particularly in GP-led settings, as locally-produced vaccines bolstered supplies.

The number of general practices, respiratory clinics and Aboriginal Community Controlled Health Organisations administering vaccines is set to exceed 3000 by the end of the week, up from more than 1500.

Australia recorded no new COVID-19 cases on Sunday.

"Whilst we're not completely out of the woods yet, I think the result from NSW and Queensland are very, very heartening," Mr Hunt said.

Victoria on Sunday recorded a 37^th day without new locally-acquired cases of COVID-19.

More than 9500 test results were received in 24-hours to midnight.

There were no new internationally acquired infections or cases acquired interstate.

There remained one known active case of the virus in Victoria, which was in an international flight crew member who was in quarantine.

- with Australian Associated Press

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