Antimicrobial resistance: revisiting the "tragedy of the commons".

When the NDM1 enzyme-containing "superbugs" struck in India, Pakistan and the United Kingdom earlier this year, media reports blamed medical tourism for its spread. But in this interview, Professor John Conly argues that the overuse and misuse of antibiotics leading to antimicrobial resistance - the theme of World Health Day 2011 - is the more important topic.