active case finding

AbstractIn rapidly growing and high-burden urban centres, identifying tuberculosis (TB) transmission hotspots and understanding the potential impact of interventions can inform future control and prevention strategies.

To evaluate the utility of a volunteer health development army in conducting population screening for active tuberculosis (TB) in a rural community in southern Ethiopia, a population-based cross-sectional survey was conducted in six kebeles (the lowest administrative units). All 24,517 adults in the study area had a symptom screen performed. Overall, 34 TB cases (6%) were identified by culture and/or Xpert, corresponding to a prevalence of 139 per 100,000 persons. This study demonstrated the capability of community health workers (volunteer and paid) to rapidly conduct a large-scale population TB screening evaluation and highlight the high yield of such a programme in detecting previously undiagnosed cases when combined with Xpert MTB/RIF testing. This could be a model to implement in other similar settings.

To determine the yield of a household contact investigation for tuberculosis (TB) under routine programme conditions. The objective of this study was to determine the yield of a household contact investigation for tuberculosis (TB) under routine programme conditions.Between April 2013 and March 2014, TB clinic officers in Amhara and Oromia regions, Ethiopia, conducted symptom-based screening for household contacts of 6,015 smear-positive TB (SS+ TB) index cases. We calculated the yield in terms of number needed to screen (NNS) and number needed to test (NNT). The NNS to detect a TB case all forms and SS+ TB was respectively 40 and 132. The NNT to diagnose a TB case all forms and SS+ TB was respectively 2.4 and 8. The yield of the household contact investigation was over 10 times higher than the estimated prevalence in the general population; household contact investigations can serve as an entry point for childhood TB care.

Subscribe to RSS - active case finding