In December I was asked by The Guardian to investigate Papua New Guinea’s frighteningly low vaccination rate – among the lowest in the world. As with everything in PNG, it’s complicated. And difficult to get across from my home office in Melbourne. But with the help of a collection of experts in health and society, mostly inside the country and a few outside, this article came together with a few ideas identifying the problems and some potential solutions. The story was re-published in early January as an audio report, recorded in the UK for distribution across the Guardian’s various international mastheads. This link is to the audio take, but within it you can go to the original written version.