A world without antibiotics?

Drug resistant infections cause 700,000 deaths a year and it's estimated that could rise to 10 million by 2050 unless major action is taken.David Aaronovitch asks how can an antibiotic crisis can be averted?Joining him in The Briefing Room are: Clare Wilson, medical reporter with The New ScientistLaura Piddock, professor of microbiology at Birmingham UniversityJeremy Knox, head of policy on drug-resistant infections at health charity The Wellcome Trust