title: Epidemiology of Pseudomonas aeruginosa in a general hospital: a four-year study.
abstract: A retrospective study was done to determine the epidemiology of infection and/or colonization due to Pseudomonas aeruginosa in a Brazilian general hospital. In 1966, 1968, and 1969, there were only two instances where probable cross-contamination was shown; the remaining isolates were unrelated. In late 1971 the hospital experienced a marked increase in P. aeruginosa isolation. Contaminated dextrose solutions used in the infant feeding were the apparent cause of the problem which occurred in the premature and special care nurseries. A contaminated oxygen humidifying bottle was the source of a different outbreak in surgery. There was also evidence in four instances that cross-infection and/or contamination had occurred. Pyocin and serological typing revealed that many strains were involved and led to a clear understanding of the complex epidemiological relationships among all the strains.
mesh_terms: D000328:Adult; D001938:Brazil; D003428:Cross Infection / Q000453:epidemiology* / Q000382:microbiology; D004196:Disease Outbreaks / Q000453:epidemiology*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D011552:Pseudomonas Infections / Q000453:epidemiology* / Q000382:microbiology; D011550:Pseudomonas aeruginosa / Q000145:classification / Q000302:isolation & purification / Q000378:metabolism; D011709:Pyocins / Q000096:biosynthesis; D012189:Retrospective Studies; D012703:Serotyping
chemical_list: D011709:Pyocins