We report a measles outbreak in Sardinia, Italy, that originated in a cruise ship passenger. The outbreak showed extensive nosocomial transmission (44 of 80 cases). To minimize nosocomial transmission, health care facilities should ensure that susceptible health care workers are vaccinated against measles and should implement effective infection control procedures.
Keywords: Italy; Sardinia; cruise ship passenger; infection control; measles; measles virus; nosocomial transmission; outbreak; viruses.