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Risk Factors for Mycobacterium abscessus subsp. bolletii Infection After Laparoscopic Surgery During an Outbreak in Brazil
Published online by Cambridge University Press: 05 January 2015
Abstract
To identify risk factors related to Mycobacterium abscessus subsp. bolletii infection during an outbreak, associated with laparoscopic surgery and to propose recommendations for preventing new cases.
A retrospective cohort study.
A private hospital in Manaus, Brazil.
A cohort of 222 patients who underwent laparoscopic surgery between July 2009 and August 2010 by a single surgical team.
We collected information about the patients and the surgical procedure using a standard form. We included sex, age, and variables with P≤0.2 in the bivariate analysis in a logistic regression model. Additionally, we reviewed the procedures for reprocessing the laparoscopic surgery equipment, and the strains obtained with culture were identified by molecular methods.
We recorded 60 (27%) cases of infection. After multivariate analysis, the duration of surgery beyond 1 hour (odds ratio [OR] 2.4; 95% confidence interval [CI] 1.2–4.5), not to have been the first operated patient on a given day (OR, 2.7; 95% CI, 1.4–5.2), and the use of permanent trocar (OR, 2.2; 95% CI, 1.1–4.2) were associated with infection. We observed that the surgical team attempted to sterilize the equipment in glutaraldehyde solution when sanitary authorities had already prohibited it. Eleven strains presented 100% DNA identity with a single strain, known as BRA100 clone.
Because contaminated material can act as vehicle for infection, ensuring adequate sterilization processing of video-assisted surgery equipment was crucial to stopping this single clonal outbreak of nonturbeculous mycobacteria in Brazil.
Infect Control Hosp Epidemiol 2015;36(1): 81–86
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- © 2015 by The Society for Healthcare Epidemiology of America. All rights reserved
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