Australia's regulatory authority for therapeutic goods, said it is investigating this "rare case".
The regulator's website says that on the basis of current data, the benefits of the vaccines against COVID-19 "continue to outweigh any risks".
He said: "The extreme rarity of these events in the context of the many millions of vaccine doses that have been administered means that the risk-benefit decision facing people who are invited to receive Covid-19 vaccines is very straightforward: receiving the vaccine is by far the safest choice in terms of minimising individual risk of serious illness or death".
Earlier Friday, a Dutch organisation that monitors vaccine side effects said it had received five reports of blood clots with low blood plate counts following vaccinations.
Professor Robin Shattock, an infections specialist and vaccinologist at Imperial College London, told Sky News: "It's really important to recognise that now there's no link to having the vaccine and having these very rare blood clots".
The UK has administered more than 31 million first vaccine doses, using both the Oxford-AstraZeneca and the Pfizer-BioNTech jabs. Meanwhile, Australia on Saturday said it would continue to use the vaccine after one case that highlighted concern over blood clots.
United States says vaccinated people can travel, with precautions
CDC defines "fully vaccinated" as at least 2 weeks after receiving the last recommended dose of an FDA-approved COVID-19 vaccine. More than one in five adults in the United States is now fully vaccinated, CDC director Rochelle Walensky said at a briefing.
Britain has said the AstraZeneca shot is safe for all age groups.
"My general feeling is that given the contractual relationships that we have with a number of companies, that we have enough vaccine to fulfill all of our needs without invoking AstraZeneca", he told Reuters. The German government followed the recommendation and said the vaccine would be prioritized for people 60 and older, although exceptions can be made in consultation with doctors.
Health minister Hugo de Jonge has said every adult in the country who wants to be vaccinated will have had at least one dose by the beginning of July.
"Given how consist of the clinical features are in this case, with some similar cases which have been seen overseas, it is likely that this case, which is reported, is related to the vaccine", he said. It also ordered 30 million doses of the Pfizer-BioNTech vaccine the same year. People can not choose which one they get.
"A careful review of all available safety data of more than 17 million people vaccinated in the European Union and United Kingdom with COVID-19 Vaccine AstraZeneca has shown no evidence of an increased risk of pulmonary embolism, deep vein thrombosis or thrombocytopenia, in any defined age group, gender, batch or in any particular country", the company had said.