A sleepy suburb in Brisbane is the scene of a gruesome disease outbreak, where the streets literally run with blood. Unravelling the mystery of where this disease comes from will have far-reaching implications — and help us track down the origins of COVID-19.Guests:Dr Peter ReidEquine vetA/Prof Linda SelveyPublic health physician and epidemiologist at the University of QueenslandDr Kim HalpinVeterinary virologist at the CSIROHelen ThomasJournalist, horse-racing commentator, and authorProf Linfa WangDirector of the Emerging Infectious Diseases Program at Duke-NUS Medical School in SingaporeHost:Olivia WillisProducers:Jane Lee, Cheyne AndersonSenior Producer:Carl SmithExecutive Producer:Joel WernerSound Design:Tim Jenkins

This is the big one. The history we’re living. From Melbourne to Munich, Lombardy to Wuhan and all the way back again: this episode is about what happened when we faced those first coronavirus cases. Where things went well, where they didn’t — and whether there’s anything we could have done to stop it.

Three transplant patients die within a week of each other and alarm bells start ringing.Guests:Fiona PepperActor, playing the part of Rae MoranDr Mike CattonDeputy Director, Doherty Institute for Infection and ImmunityDr Dominique MartinAssociate Professor in Bioethics, Deakin UniversityHost:Olivia WillisProducers:James Bullen, Cheyne AndersonExecutive Producer:Joel WernerSound Design:Tim Jenkins

A junior doctor uncovers a mystery that rewrites the story of a famous epidemic — and we learn the troubling origins of 'patient zero' as a concept.Guests:Dr John GerrardDirector of Infectious Diseases and Immunology, Gold Coast University HospitalProfessor Sharon LewinDirector, Peter Doherty Institute for Infection and ImmunityPhil CarswellFounding president, Victorian AIDS CouncilBill BowtellAdjunct professor, University of New South WalesHost:Olivia WillisProducers:Cheyne Anderson, James BullenExecutive Producer:Joel WernerSound Design:Tim Jenkins

Disease is spreading in the wake of a natural disaster on the Caribbean nation of Haiti — and everyone thinks they know where it's coming from… (Spoiler: They don't).

Guests:Jonathan M. KatzFreelance journalist and author, The Big Truck That Went ByDr Louise IversExecutive Director, Massachusetts General Hospital Center for Global Health; Associate Professor of Global Health and Social Medicine, Harvard Medical SchoolNelson Junior CeranorHost:Olivia WillisProducers:James Bullen, Cheyne AndersonExecutive Producer:Joel WernerSound Design:Tim Jenkins

Even big diseases start small.A co-production of ABC Science and Radio National, Patient Zero tells the stories of disease outbreaks: where they begin, why they happen and how we found ourselves in the middle of a really big one. Host:Olivia WillisProducers:James Bullen, Cheyne AndersonExecutive Producer:Joel WernerSound Design:Tim Jenkins

An extra episode in the series about High Court cases which have changed Australia. Series producer Jane Lee unpicks the origins and uses of Section 51(26) of the Australian Constitution, which gives the Federal Parliament the power to make special laws for a particular race of people.

In the second part of the long running and divisive case known as the Hindmarsh Island bridge affair, the battle heads inside the High Court.