WHO has revised its standard case definitions for TB and drug-resistant TB.
The recording and reporting of data is a core element of tuberculosis (TB) control and elimination. The standardization of definitions and reporting structures has permitted uniformity, continuity and comparability on monitoring the performances of the national TB control programmes for many years, as well as the impact of those efforts.
WHO has just launched Definitions and reporting framework for tuberculosis – 2013 revision. It revises previous WHO standard case definitions for TB and drug-resistant TB, the categories used to assign outcomes, and the standard reporting framework for TB. These recommendations consider the latest rapid molecular diagnostics and will simplify reporting requirements. The definitions were tested in 7 countries, including Belarus and Estonia.
You can find the document online: http://apps.who.int/iris/bitstream/10665/79199/1/9789241505345_eng.pdf
Source: WHO