TABLE 1.

Baseline Model Parameters Needed to Calculate Xpert Cartridges and Modules to Identify 90% of Total Estimated TB Cases

ParameterValue
Estimated TB burden coverage90%
Type of WRDXpert MTB/RIF
Who receives a WRD?All with TB symptoms
Number of adults with symptoms needed to test with WRD to diagnose one adult with TB10
Number of children with symptoms needed to test with WRD to diagnose one child with TB4
Number of days per year that WRD (module) is operational168
Number of test cycles per day per module3
Estimated percentage of PLHIV enrolled on ART81%
TB screening visits per year for clients on ART2
Percentage of clients on ART with symptoms that require WRD20%
  • Abbreviations: ART, antiretroviral therapy; PLHIV, people living with HIV; TB, tuberculosis; WRD, World Health Organization-recommended rapid diagnostic.