The Morrison Government is now considering next steps in regard to the AstraZeneca coronavirus vaccine rollout, after the UK began offering people aged under 30 an alternative formula.
It comes after the European Medicines Agency confirmed the jab can cause bloot clots in extremely rare cases, but maintains the benefits still outweigh the risks.
Australia's Therapeutic Goods Administration has been working with its foreign counterparts and the issue will be discussed at the next National Cabinet meeting.
Tasmanian Senator Jacqui Lambie has told Sky it's concerning.
"We've all got different DNA inside of us...some things don't suit some people, and there will be adverse reactions to them," she said.
"I don't think it's helping build the confidence; it's not just that, it's such a slow rollout."
Health Minister Greg Hunt told media on Wednesday Australia's still well positioned compared to other countries.
"This is another day with zero cases of community transmission in Australia. We know that we faced a potential two state breakout but the collective actions of Australians in coming forward has been immensely important in helping to isolate cases, to ensure that we have people in quarantine, and to ensure that the testing levels are high," he said.
"That makes 57 days, I'm advised, this year, so 57 days of zero cases of community transmission in Australia. At the same time, almost extraordinarily, we’ve seen 579,000 cases around the world in the last 24 hours and 11,500 lives lost."
Tasmania's Health Department was approached for comment.