NZ's chances of a Covid vaccine

Australia is a step closer to securing a vaccine for Covid-19, and an international deal to produce it locally, if Oxford University's trials succeed. The indication is New Zealand could benefit as a result, but how far down the global priority list are we, due to our efforts at elimination? The Australian Government has signed a letter of intent with UK-based drug company AstraZeneca to secure the Oxford Covid-19 vaccine. It's the most promising vaccine in development, entering phase three trials to evaluate its efficacy, the final step before approval. Kathryn Ryan speaks with University of Otago infectious disease expert Professor David Murdoch, one of three international scientists invited to advise the University of Oxford's Vaccine Group on its safety and efficacy.