Revised Definition of Extensively Drug-Resistant Tuberculosis. Morbidity and Mortality Weekly Report, 55(43): 1176, November 3, 2006.
As a result of the first meeting of the Global XDR TB Task Force (October 6-7, 2006), the case definition of extensively drug-resistant tuberculisis (XDR TB) was revised. This Notice to Readers details the events leading up to this revision and the new case definition.