75,000 people in the US die from hospital-acquired infections each year. Common bacteria like C. diff and MRSA spread in hospitals due to poor hand hygiene, overuse of antibiotics, and inadequate cleaning. Only 6% of hospitals do well at preventing the spread of both bacteria. Hospitals can improve by enforcing hand washing, using antibiotics judiciously, and deploying pulsed UV light robots that can disinfect a room in minutes and reduce infection rates by up to 70%.