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Number of Contacts Tested for TBI

References in the content below refer to the PBMEF Guide.

Definitions

Number of contacts of new/relapse pulmonary TB patients who were tested for TB infection (TBI) during the reporting period (TBI testing includes tuberculin skin test [TST], interferon-gamma release assay [IGRA]).

Numerator

Number of contacts of new/relapse pulmonary TB patients who were tested for TBI during the reporting period (TBI testing includes TST, IGRA)

Denominator

N/A
Ref #
CON_TBI_TST
Tier Level
Project Level Indicators
Category
Reach
Type
Output
Unit of Measure
Number of people
Data Type
Integer
Disaggregations
Age (0–4, 5–14, 15+)
Sex
Type of diagnostic test
Reporting Level
National, subnational
Reporting Frequency
Quarterly, monthly

The data sources are basic management unit TB register, screening register, presumptive TB register, cough register, outpatient department registers, contact investigation (CI) register, or electronic management information systems available at the health facility and district level.

This indicator provides data for TBI testing in the process of evaluating contacts and provides the next layer of granular data to understand screening practices. It helps to supplement the Core and Core Plus as well as monitoring, evaluation, and learning (MEL) national indicators for measuring the ability of National TB Programs (NTPs) to systematically identify and screen for TBI. Reporting of these indicators enables conducting detailed analysis such as constructing CI cascade analyses for better understanding of the programmatic performance and to track progress for enabling TB preventive treatment (TPT) initiations.

The number of contacts who were tested for TBI provides a good comparison to determine the magnitude of individuals who are infected with TB but do not have active TB disease. In some settings, this is an important first step for initiating TPT. It can be analyzed as a trend over time or compared across regions to understand performance in TBI testing among contacts. Comparisons with a country’s targets for TBI testing will provide the impetus to strengthen the implementation of CI strategies within an NTP.

Example chart/graph:

  • Trends over time by geographic area, risk group, and by location (i.e. community-based or facility-based)
  • CI cascade
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