TY - CHAP M1 - Book, Section TI - Tuberculosis A1 - Langston, Shannon M. A1 - Bales, Brian D. A2 - Knoop, Kevin J. A2 - Stack, Lawrence B. A2 - Storrow, Alan B. A2 - Thurman, R. Jason PY - 2021 T2 - The Atlas of Emergency Medicine, 5e AB - Tuberculosis (TB) is a chronic bacterial infection spread from human to human through respiratory droplets containing M tuberculosis, an acid-fast bacillus. Upon inhalation, the organisms are transported to regional lymph nodes where the immune system forms granulomas or “tubercles.” Most people undergo complete healing following exposure with only a positive purified protein derivative (PPD) test. However, it may lie dormant as latent disease until the immune system is suppressed, leading to organism release. TB occurs worldwide but is more common in impoverished nations. SN - PB - McGraw-Hill CY - New York, NY Y2 - 2024/04/19 UR - accessemergencymedicine.mhmedical.com/content.aspx?aid=1181051544 ER -