Teachback methodology: building global training capacity with a unique training-of-trainers course.

To meet the global demand for training assistance in tuberculosis (TB) and human immunodeficiency virus (HIV) infection, a systematic model was created to conduct training-of-trainers courses. The Teachback Methodology curriculum was created using adult learning principles and implemented by collaborating with partners to create training-of-trainers courses. A total of 42 courses were held in 18 countries, resulting in 901 participants being able to enhance their training skills. During training-of-trainers courses, the participants practice teaching a course. Trainers observe the participants' performance and provide feedback on training skills and accuracy of course content. The methodology can be integrated with TB and HIV courses to enhance training capacity and help build a competent workforce.