Pneumonia is an infection of the lungs. These indicators apply to pneumonia that started prior to hospital admission. (The Infection Control section covers pneumonia that started while in the hospital.) Although children also can develop pneumonia, current nationally endorsed indicators apply only to persons age 18 or older. These indicators examine the initial care of pneumonia patients, and the extent to which the hospital staff help the patient prevent future lung problems. Norton Healthcare performance represents the performance of all the hospitals combined.