Book excerpt: Before effective treatments were introduced in the 1950s, tuberculosis was a leading cause of death and disability in the United States. Health care workers were at particular risk. Although the occupational risk of tuberculosis has been declining in recent years, this new book from the Institute of Medicine concludes that vigilance in tuberculosis control is still needed in workplaces and communities. Tuberculosis in the Workplace reviews evidence about the effectiveness of control measuresâ€"such as those recommended by the Centers for Disease Control and Preventionâ€"intended to prevent transmission of tuberculosis in health care and other workplaces. It discusses whether proposed regulations from the Occupational Safety and Health Administration would likely increase or sustain compliance with effective control measures and would allow adequate flexibility to adapt measures to the degree of risk facing workers.