Abstract Benjamin R. Underwood, Veronica L. C. White, Tim Baker, Malcolm Lawand John C. Moore-Gillon Background The aim of the study was to investigate therelative effectiveness of four strategies in detecting and preventingtuberculosis: contact tracing of smear-positive pulmonarydisease, of smear-negative pulmonary disease andof non-pulmonary disease, and screening new entrants.Methods An analysis of patient records and a TB databasewas carried out for an NHS Trust-based tuberculosis servicein ...