RT Journal Article T1 Nosocomial Outbreak of Infection With Pan-Drug-Resistant Acinetobacter baumannii in a Tertiary Care University Hospital A1 Valencia, Raquel A1 Arroyo, Luis A A1 Conde, Manuel A1 Aldana, Josefa M A1 Torres, María-José A1 Fernández-Cuenca, Felipe A1 Garnacho-Montero, José A1 Cisneros, José M A1 Ortíz, Carlos A1 Pachón, Jerónimo A1 Aznar, Javier K1 Acinetobacter baumannii K1 Antibacterianos K1 Instituciones Oncológicas K1 Estudios de Casos y Controles K1 Infección Hospitalaria K1 Brotes de Enfermedades K1 Hospitales Universitarios K1 Humanos K1 Control de Infecciones K1 Factores de Riesgo K1 España AB OBJECTIVETo describe what is, to our knowledge, the first nosocomial outbreak of infection with pan-drug-resistant (including colistin-resistant) Acinetobacter baumannii, to determine the risk factors associated with these types of infections, and to determine their clinical impact.DESIGNNested case-control cohort study and a clinical-microbiological study.SETTINGA 1,521-bed tertiary care university hospital in Seville, Spain.PATIENTSCase patients were inpatients who had a pan-drug-resistant A. baumannii isolate recovered from a clinical or surveillance sample obtained at least 48 hours after admission to an intensive care unit (ICU) during the time of the epidemic outbreak. Control patients were patients who were admitted to any of the "boxes" (ie, rooms that partition off a distinct area for a patient's bed and the equipment needed to care for the patient) of an ICU for at least 48 hours during the time of the epidemic outbreak.RESULTSAll the clinical isolates had similar antibiotic susceptibility patterns (ie, they were resistant to all the antibiotics tested, including colistin), and, on the basis of repetitive extragenic palindromic-polymerase chain reaction, it was determined that all of them were of the same clone. The previous use of quinolones and glycopeptides and an ICU stay were associated with the acquisition of infection or colonization with pan-drug-resistant A. baumannii. To control this outbreak, we implemented the following multicomponent intervention program: the performance of environmental decontamination of the ICUs involved, an environmental survey, a revision of cleaning protocols, active surveillance for colonization with pan-drug-resistant A. baumannii, educational programs for the staff, and the display of posters that illustrate contact isolation measures and antimicrobial use recommendations.CONCLUSIONSWe were not able to identify the common source for these cases of infection, but the adopted measures have proven to be effective at controlling the outbreak. PB University of Chicago Press PB The Society for Healthcare Epidemiology of America SN 0899-823X YR 2009 FD 2009-03 LK http://hdl.handle.net/10668/1672 UL http://hdl.handle.net/10668/1672 LA en NO Valencia R, Arroyo LA, Conde M, Aldana JM, Torres MJ, Fernández-Cuenca F, et al. Nosocomial outbreak of infection with pan-drug-resistant Acinetobacter baumannii in a tertiary care university hospital. Infect Control Hosp Epidemiol. 2009 ; 30(3):257-63 NO Journal Article; DS RISalud RD Apr 17, 2025