Norman Swan speaks to Professor Stephen Morse from Columbia University, a world-leading expert in new and emerging diseases, about recent epidemics to find out — where are they now? He warns we can't be complacent: there are many diseases out there we don't know about yet, and conditions we thought had passed (like SARS) are in fact still out there too. Produced for Tonic TV with assistance from NPS. First screened on ABC2.

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