000			01421nam a22001697a 4500
999			_c3954 _d3954
003			OSt
005			20191226215625.0
008			140505b xxu||||| |||| 00| 0 eng d
020			_a9789290613145
060			_aWF 300 A 2007
245			_aAssessing tuberculosis prevalence through population surveys.
260			_aGeneva : _bWorld Health Organization, _c2007.
300			_axii, 235 p. : _bill. ; _c24 cm.
520			_aThis publication provides countries with practical guidelines for planning population-based surveys to estimate the prevalence of tuberculosis (TB) at a national level. TB prevalence surveys yield useful information in areas where notification data obtained through routine surveillance are incomplete, or of unproven accuracy, and in areas with an estimated TB prevalence of more than 100 per 100 000. These surveys are used to evaluate the performance of the TB program, and to assess trends over time. To achieve this objective, data are collected through standards methods in a well-defined study population. This document is meant to provide information on the core survey methods, including diagnostic tests for TB, screening strategies, and case definitions. The target audience includes TB experts and advisers at national and international levels, and investigators involved in prevalence surveys.
650			_aAssessing tuberculosis prevalence through population surveys.
942			_2NLM _cBTL