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2008Pilsczek Florian H; Kaufmann Stefan H E
Prevalence and predictors of positive tuberculin skin test results in a research laboratory.
Revista da Sociedade Brasileira de Medicina Tropical 2008;41(4):416-8.
Latent tuberculosis was studied in a research laboratory. A prevalence of positive tuberculin skin test results (>or= 15 mm) of 20% was found and the main predictors were place of birth in a foreign country with high prevalence of tuberculosis and a history of contact with patients with untreated active tuberculosis.

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