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Surveillance cultures following a regional outbreak of carbapenem-resistant Acinetobacter baumannii
Published online by Cambridge University Press: 14 May 2021
The primary aim of this study was to assess the epidemiology of carbapenem-resistant Acinetobacter baumannii (CRAB) for 9 months following a regional outbreak with this organism. We also aimed to determine the differential positivity rate from different body sites and characterize the longitudinal changes of surveillance test results among CRAB patients.
A 607-bed tertiary-care teaching hospital in Milwaukee, Wisconsin.
Any patient admitted from postacute care facilities and any patient housed in the same inpatient unit as a positive CRAB patient.
Participants underwent CRAB surveillance cultures from tracheostomy secretions, skin, and stool from December 5, 2018, to September 6, 2019. Cultures were performed using a validated, qualitative culture method, and final bacterial identification was performed using mass spectrometry.
In total, 682 patients were tested for CRAB, of whom 16 (2.3%) were positive. Of the 16 CRAB-positive patients, 14 (87.5%) were residents from postacute care facilities and 11 (68.8%) were African American. Among positive patients, the positivity rates by body site were 38% (6 of 16) for tracheal aspirations, 56% (9 of 16) for skin, and 82% (13 of 16) for stool.
Residents from postacute care facilities were more frequently colonized by CRAB than patients admitted from home. Stool had the highest yield for identification of CRAB.
- Original Article
- © The Author(s), 2021. Published by Cambridge University Press on behalf of The Society for Healthcare Epidemiology of America