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A multicenter evaluation of tuberculin skin test positivity and conversion among health care workers in Brazilian hospitals


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.… Read more