“The Department of Health is working closely with our counterparts in the Therapeutic Goods Administration (TGA) to investigate the cases,” WA Health said in a statement.
“One is a woman, aged in her early 50s, who is currently in a stable condition at a Perth metropolitan hospital.
“The second is a male in his 70s, also from the Perth metropolitan area, who is recovering at home.”
The vaccine is recommended for people aged over 50 in Australia, with blood clots very rare.
Around 50 Australians every day develop blood clots.
Australians who have a family history of blood clots or incidences of deep vein thrombosis do not have a higher chance of vaccine-induced thrombotic thrombocytopenia – or TTS – occurring after receiving an AstraZeneca dose.
There have been 24 reports of blood clot cases in Australia relating to the AstraZeneca vaccine.
The other patients recovered.