The AstraZeneca vaccine has arrived in Australia, and the Federal Government says it will start rolling out to people in the priority phase 1a group within the next few weeks. But the evidence suggests it's not as effective as the Pfizer shot at protecting people against new variants and preventing transmission. Australia's main risk from another coronavirus outbreak is a hotel quarantine leak, so is the Astra vaccine the right shot for people working on our borders? On today's Coronacast, a look at Australia's vaccine strategy. Also: Auckland goes into a week long lockdown, but this time New Zealand is facing something it hasn't had to worry about before.