Date Time Chief Health Officer advice: AstraZeneca vaccine rollout As Western Australia’s Chief Health Officer, I would like to reassure you of the continued safety of the vaccination program and indeed the AstraZeneca vaccine. My advice follows that of Australian Government Chief Medical Officer, Professor Paul Kelly confirming the Australian Government remains confident in the AstraZeneca COVID-19 vaccine and there is currently no evidence that it is linked to blood clots. More than 11 million people have been vaccinated in the United Kingdom with the AstraZeneca vaccine to date, without evidence of an increase in blood clots. The Therapeutic Goods Administration (TGA) undertook a rigorous assessment of COVID-19 vaccine prior to use in Australia and approved the use of both the Pfizer and AstraZeneca vaccines.