Although there are approximately 160 varieties of antibiotics available in seven different categories, one of the problems is the difference between broad-spectrum and narrow-spectrum antimicrobials—the former covering all manner of infections and the latter targeted at specific bacteria—and the importance of using the right drug for a specific infection. The rapid spread of multidrug-resistant bacteria brings us closer to the point at which we might not be able to prevent or treat everyday infections or diseases, which would have a devastating impact, as Jim Eadie said.