The spread of superbugs
"50% of antibiotic use is unnecessary or inappropriate. Overuse, misuse, improper dosing and the use of substandard or diluted medicines all contribute to the rise of resistance. But so too do weak health-care systems and poor or unenforced regulations. Unless a strict code of practice forbids overuse, and systems are in place to monitor their behaviour, doctors have every incentive to treat the patient in front of them—not worry about the theoretical patient a decade hence who may suffer from the consequences of overuse of antibiotics."