SEARCHED TERM
Contact investigation
DEFINITION
Systematic screening of people with previously undiagnosed tuberculosis or M. tuberculosis infection among the contacts of an index case of tuberculosis in the household and in comparable settings in which transmission occurs. It consists of identification, screening, clinical evaluation and/or testing, as appropriate.
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SOURCE DEFINITION
Systematic identification of people with previously undiagnosed TB disease and TB infection among the contacts of an index TB patient in the household and in comparable settings in which transmission occurs. It consists of identification, clinical evaluation and/or testing and provision of appropriate anti-TB therapy (for people with confirmed TB) or TB preventive treatment (for those without TB disease). This term is often used synonymously with “contact tracing”; however, in the context of TB, action beyond identifying contacts is critical.
OTHER DEFINITIONS
Systematic process intended to identify previously undiagnosed cases of TB among the contacts of an index case. In some settings, the goal also includes testing for latent TB infection (LTBI) to identify possible candidates for preventive treatment. Contact investigation consists of two components: identification and prioritization, and clinical evaluation
Process of identification, assessment and follow-up of close contacts of index cases
Process of identifying close contacts of index cases, for which public health measures (such as tuberculin skin testing or chest radiography) may be required
Process of finding, notifying, screening, and treating persons who might have LTBI or TB disease as a result of recent contact with a person diagnosed with TB disease. This process is undertaken promptly after a TB source patient is identified
Investigation of persons who have come into contact with a patient with infectious TB. The goals of a contact investigation are to identify additional persons with active TB, to determine if transmission occurred between the TB patient and the contacts, and to identify person with latent TB infection who are candidates for treatment
Process of identifying close contacts of index cases, for which public health measures (such as tuberculin skin testing, chest radiography or interferon-gamma release assays) may be required.
Interviewing, counselling, educating, examining, and investigating activities directed at persons who have been in close contact with patients who have infectious TB
A systematic process for identifying previously undiagnosed people with TB among the contacts of an index case. Contact investigation consists of identification and prioritization and clinical evaluation. It may also include testing for LTBI to identify candidates for TB preventive treatment
Systematic identification of people, including children and adolescents, with previously undiagnosed TB disease and TB infection among the contacts of an index TB patient in the household and in comparable settings in which transmission occurs. It consists of identification, clinical evaluation and/or testing and provision of appropriate TB treatment (for people with confirmed TB) or TB preventive treatment (for people without TB disease).
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