The document discusses nosocomial (hospital-acquired) infections. It notes that nosocomial infections occur in 5-8% of hospitalized patients, with 1/3 being preventable. They can be transmitted through direct or indirect contact with patients or contaminated surfaces/instruments. Proper infection control practices are important to prevent transmission and protect patients and healthcare workers. These include standard precautions like hand hygiene and use of personal protective equipment, as well as isolation precautions depending on the type of infection.