Tuberculosis have been documented since antiquity and the search of the microbes that cause this disease started more than three hundred years ago. Nevertheless, tuberculosis remains an important global health issue, with millions of people affected per year in addition to millions that remain undiagnosed and untreated. Patients with tuberculosis face the full range of recurrence, reinfection, and resistance due to diagnostic, prophylactic, and therapeutic procedures that are not as effective as they should be. In addition, variability in susceptibility to tuberculosis pose a complex problem with numerous interrelated variables. This volume is devoted to the understanding of Tuberculosis focusing on its heterogeneity, its transmission, manifestations, related conditions, diagnosis, treatments, drug resistance and prevention.