The real story is that sixteen-year-old Walt Disney wanted to enlist in the U.S. Army during World War I, but was too young. So he lied about his age and enlisted in the American Ambulance Corps of the Red Cross. Young Walt arrived in France in November 1918, just shy of his 17th birthday.
Nosocomial Infections. Infections acquired during a hospital stay are called nosocomial infections. Formally, they are are defined as infections arising after 48 hours of hospital admission. For earlier periods it is presumably assumed that the infection arose prior to admission, though this is not always going to be true.
Healthcare-associated pneumonia (nosocomial pneumonia) is pneumonia that you get when you are in a hospital or nursing home. Experts generally consider it a more serious illness than pneumonia that people get in daily life (community-associated pneumonia). This is because the person with healthcare-associated pneumonia may already have a serious illness. Healthcare-associated pneumonia is also often caused by bacteria other than Streptococcus pneumoniae, which causes most cases of pneumonia.