3.3 ScreenTB tool

The most desirable screening strategy is one with high total yield of true-positive TB cases, few false-positives, low NNS, low cost, a rapid and simple algorithm and high client acceptability. In practice, many of these factors can run in opposite directions, and multifactorial analysis is required. The ScreenTB online tool has been developed to assist in prioritizing risk groups for screening and choosing appropriate screening and diagnostic algorithms. The tool allows users to select one or several risk groups and to estimate the yield and costs of screening for each with different screening algorithms. The tool must not be used as the only source for prioritization, planning and budgeting but rather as a starting point.

The tool can be found at https://www.who.int/activities/screening-for-tb.

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