2.6.2 Implementation considerations

There is limited evidence on the effectiveness of different screening intervals. The GDG suggests that the screening interval should be no longer than 12 months if possible, while an interval shorter than 12 months may be more beneficial. To the extent possible, TB screening should be combined with screening for other diseases and with health-promotion activities, as well as with efforts to improve working conditions (especially by reducing exposure to silica) and living conditions. During employment, screening should be considered to be the responsibility of the employer, and countries may have occupational health and safety legislation that addresses this.

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