Twelve nosocomial outbreaks over 14 years at a tertiary-care center in Mexi
co are described. Overall mortality was 25.8%, one half due to pneumonia. T
he most common organism was Pseudomonas aeruginosa. Incidence was three out
breaks per 10,000 discharges; outbreak-related infections comprised 1.56% o
f all nosocomial infections. Incidence in the intensive care unit was 10-fo
ld higher (Infect Control Hosp Epidemiol 2000;21:527-529).