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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
medicine
A multicenter evaluation of tuberculin skin test positivity and conversion among health care workers in Brazilian hospitals
International Journal of Tuberculosis and Lung Disease, Volume 9, No. 12, Year 2005
Notification
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Description
SETTING: Four general Brazilian hospitals. OBJECTIVE: To assess the occupational risk of Mycobacterium tuberculosis (TB) in participating hospitals. DESIGN: In phase one of this longitudinal study, a cross-sectional survey documented baseline tuberculin skin test (TST) positivity rates. In phase two, TST conversion rates were evaluated in participants with an initial negative two-step TST. TST conversion data were analyzed to determine risk factors for TB infection using an increase of ≥10 mm compared to baseline TST. RESULTS: The initial TST positivity rate was 63.1%; the follow-up TST conversion rate was 10.7 per 1000 person-months (p-m). Hospital of employment, recent bacille Calmette-Guérin (BCG) vaccination, nosocomial TB exposure, and employment as a nurse were independent risk factors for TST conversion. Hospitals without TB infection control measures had higher conversion rates than those with control measures (16.0 vs. 7.8/1000 p-m, P < 0.001). CONCLUSIONS: This study indicates an important occupational risk of infection in health care settings with a high TB incidence. Longitudinal TST studies are a valuable tool to assess the occupational risk of TB, even in BCG-vaccinated populations, and should be used to direct limited resources for infection control. © 2005 The Union.
Authors & Co-Authors
Garrett, Denise O.
United States, Atlanta
National Center for Infectious Diseases
Laserson, Kayla F.
United States, Atlanta
Centers for Disease Control and Prevention
Starling, Carlos Ernesto Ferreira
Brazil, Belo Horizonte
Universidade Federal de Minas Gerais
Kritski, Afrânio Lineu
Brazil, Rio de Janeiro
Universidade Federal do Rio de Janeiro
Medeiros, Eduardo Alexandrino Sérvolo De
Brazil, Sao Paulo
Universidade Federal de São Paulo
Binkin, Nancy J.
United States, Atlanta
Centers for Disease Control and Prevention
Jarvis, William Robert
United States, Atlanta
National Center for Infectious Diseases
Statistics
Citations: 69
Authors: 7
Affiliations: 6
Identifiers
ISSN:
10273719
Research Areas
Health System And Policy
Infectious Diseases
Study Design
Cross Sectional Study
Cohort Study
Study Approach
Quantitative