Govt secures more Pfizer doses after AstraZeneca advice

Federal health authorities have revised their advice on the AstraZeneca coronavirus vaccine saying Pfizer's injection is now the preferred option for people under the age of 50. It's in response to a small number of blood clotting cases around the world potentially linked to the AstraZeneca vaccine. Professor Julie Leask, a vaccine uptake expert at the University of Sydney, says 'it's the right decision for our country right now.'