Lo, Melanie2010-07-292010-07-292010-07-29https://hdl.handle.net/11299/92593The information provided in this handout does not necessarily reflect the views of the University of Minnesota Medical School physicians and faculty. These materials are provided for informational purposes only and are in no way intended to take the place of the advice and recommendations of your personal health care provider. You use the information provided in these handouts at your own risk.Many immigrants in the Twin Cities area come from areas where TB is endemic, and BCG vaccination in infancy is a standard part of TB control efforts. PPD testing is a widely used screening tool in the US, but concern for cross-reactivity in BCG-vaccinated patients may confuse results. This study shows that PPD testing may be used to screen for tuberculosis in adults that were vaccinated with BCG vaccination during infancy. A cutoff induration of 15mm should be used to define a positive PPD test regardless of BCG vaccination status.en-USTuberculosisBCGBCGTSTOther