Animated video demonstrating the transmission and pathogenesis of tuberculosis (TB). This video is used by CDC’s Division of Tuberculosis Elimination (DTBE) as part of the Interactive Core Curriculum: What the Clinician Should Know web-based training. For more information about TB please visit: http://www.cdc.gov/tb/default.htm or follow on twitter at @CDC_TB. Comments on this video are allowed in accordance with our comment policy: http://www.cdc.gov/SocialMedia/Tools/CommentPolicy.html This video can also be viewed at https://www.cdc.gov/tb/video/TB-course-video-CDC.mp4