The problem of securing health / Stephen J. Collier and Andrew Lakoff -- From population to vital system : national security and the changing object of public health / Andrew Lakoff -- Redesigning syndromic surveillance for biosecurity / Lyle Fearnley -- How did the smallpox vaccination program come about? tracing the emergence of recent smallpox vaccination thinking / Dale A. Rose -- Disease as a security threat : critical reflections on the global TB emergency / Erin Koch -- Vital mobility and the humanitarian kit / Peter Redfield -- Mapping the multiplicities of biosecurity / Nick Bingham and Steve Hinchliffe -- From mad cow disease to bird flu : transformations of food safety in France / Frédéric Keck -- Biodefense : considering the sociotechnical dimension / Kathleen M. Vogel -- Anticipations of biosecurity / Carlo Caduff -- Afterword: Episodes or incidents : seeking significance / Paul Rabinow.