Health authorities have said it is "likely" the vaccine is linked to a 44-year-old Melbourne man being hospitalised with blood clots, almost a fortnight after he received his injection.
But Health Minister Greg Hunt said Australia's medicine regulator, the Therapeutic Goods Administration (TGA), and an expert advisory group on vaccines maintain the AstraZeneca jab is safe - but are continuing to investigate the incident.
He said authorities had put the vaccine through rigorous testing before allowing its use across the country.
