Table 6. World Health Organization recommendations on risk groups for screening.

Strong recommendations a
Household and other close contacts should be systematically screened for active TB
People living with HIV should be screened for TB at each visit to a health facility
Current and past workers in workplaces with silica should be screened for active TB
Conditional recommendations b
Systematic screening for active TB should be considered in prisons
Systematic screening for active TB should be considered in those with fibrotic chest radiograph lesions
Systematic screening for active TB should be considered for those seeking or in health-care
Systematic screening for active TB should be considered in other high-risk groups; these include people living in urban slums, homeless people, people living in remote areas, some indigenous populations, and migrants/refugees

TB, tuberculosis. ^aA strong recommendation is one in which the desirable effects clearly outweigh the undesirable effects and for which screening is judged to be feasible, acceptable, and affordable in all settings. ^bA conditional recommendation is one in which the desirable effects probably outweigh the undesirable effects. Adapted from reference 74.