Ethiopia's experience on scaling up latent TB infection management for people living with HIV and under-five child household contacts of index TB patients

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Abstract

Management of latent tuberculosis infection (LTBI) is one of the globally recommended key strategies to end tuberculosis. However, there is limited experience with translation of global recommendations into action at country levels. We present Ethiopia's experience in implementing LTBI management. Our objective is to share promising practices, existing opportunities and to suggest specific steps required for further scale up of the services. Our report is based on synthesis of data from secondary sources including official routine reports of Ministry of Health, materials presented at review meetings, and findings from supervisory visits to districts and health facilities. Our results suggest that Ethiopia has made significant strides toward strengthening LTBI management in people living with HIV and among under-five-year-old household contacts of TB patients. The use of contact investigation as entry point for LTBI management could be taken as best practice. More effort is needed to further strengthen implementation of LTBI management, and it should be supported through context-specific implementation and operational research activities.

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The Yield of Community-Based “Retrospective” Tuberculosis Contact Investigation in a High Burden Setting in Ethiopia

Zewdu Gashu, Degu Jerene, Mitiku Ensermu … (2016)

Objective To determine the yield and determinants of retrospective TB contact investigation in selected zones in Ethiopia. Materials and Methods This was a community-based cross-sectional study conducted during June-October 2014.Trained lay providers performed symptom screening for close contacts of index cases with all types of TB registered for anti-TB treatment within the last three years. We used logistic regression to determine factors associated with TB diagnosis among the contacts. Results Of 272,441 close contacts of 47, 021 index cases screened, 13,886 and 2, 091 had presumptive and active TB respectively. The yield of active TB was thus 768/100, 000, contributing 25.4% of the 7,954 TB cases reported from the study zones over the study period. The yield was highest among workplace contacts (12,650/100, 000). Active TB was twice more likely among contacts whose index cases had been registered for TB treatment within the last 12 months compared with those who had been registered 24 or more months earlier (adjusted odds ratio, AOR: 1.77 95% CI 1.42–2.21). Sex or clinical type of TB in index cases was not associated with the yield. Smear negative (SS-) index cases (AOR: 1.74 955 CI 1.13–2.68), having index cases who registered for treatment within <12 months (AOR: 2.41 95% CI 1.51–3.84) and being household contact (AOR: 0.072 95% CI 0.01–0.52) were associated with the occurrence of active TB in children. Conclusions The yield of retrospective contact investigation was about six times the case notification in the study zones, contributing a fourth of all TB cases notified over the same period. The yield was highest among workplace contacts and in those with recent past history of contact. Retrospective contact screening can serve as additional strategy to identify high risk groups not addressed through currently recommended screening approaches.