Emergence of Mycobacterium tuberculosis with Extensive Resistance to Second-Line Drugs — Worldwide, 2000–2004. Morbidity and Mortality Weekly Report, 55(11): 301-305, March 24, 2006.
![Emergence of Mycobacterium tuberculosis with Extensive Resistance to Second-Line Drugs — Worldwide, 2000–2004. Morbidity and Mortality Weekly Report, 55(11): 301-305, March 24, 2006.](/sites/default/files/styles/thumbnail/public/images/publications/ad_33001_0.jpg?itok=p2WRu3aB)
During November 2004 - November 2005, CDC and WHO surveyed an international network of TB laboratories to assess the frequency and distribution of extensively drug-resistant (XDR) TB cases. This report summarizes the results of that survey.