3.Estimated Incidence and Prevalence of TB

1. The WHO Tuberculosis Annual Report suggests the calculation of the incidence rate by the following method(s), based on the data information obtained for the individual country: (1) incidence = cases notifications/proportion of cases detected (2) incidence = prevalence / duration of condition (3) incidence = annual risk of infection x Sty'blo coefficient (4) incidence = deaths/proportion of incident cases that die