Trypanosomiasis, African Clinical Trial
Official title:
Screen and Treat Implementation in Insecure Areas With Limited Capacities for HAT Control
Human African Trypanosomiasis (HAT), or sleeping sickness, is one of the parasitic diseases targeted for interruption of transmission by 2030 by the WHO. The development of fexinidazole as treatment is a huge step towards this achievement; however, the diagnostic algorithm remains complex due to limited sensitivity and specificity of the available tests. A combination of serological screening and confirmation of infection through parasite visualization remains the preferred strategy, although it can be difficult to ensure its full performance in areas that are hard to reach or have limited access to electricity and other means. The present study would like to test an approach of ensuring treatment with fexinidazole of sero-suspects without confirmation of disease, among patients that consult fixed health infrastructures in the provinces of Maniema, Lomami and Tanganyika. This should enable access to gHAT treatment for patients living in hard to reach areas, actively seeking health care.
In this study, all gHAT suspects that attend participating health facilities with suggestive symptoms and test positive in an antibody detection rapid test, will presumptively be treated with fexinidazole. Blood samples will be collected for the post-hoc confirmation of the infection. Nine Health facilities have been selected in the health zones of Kasongo, Kibombo, Kunda and Samba (province of Maniema), Kongolo (province of Tanganyika) and Lubao (province of Lomami) by the PNLTHA, and ITM, based on both epidemiological data and operational considerations. All patients that consult the selected facilities showing any symptom that could be attributed to gHAT will be offered to participate in the study and kindly requested to provide informed consent. Participants will be tested using the rapid diagnostic test (RDT) HAT Sero-K-SeT. All positive individuals will be asked to provide a venous blood sample, that will be sent to the Institut National de Recherche Biomédical (INRB) or Centre de Recherche en Santé de Kimpese (CRSK) for further serological testing with iELISA and/or immune trypanolysis (TL) and to confirm diagnosis with molecular testing. They will also be offered a 10-day fexinidazole treatment, as inpatient. After treatment, the study participants will be asked to return to the health facility after six months for a clinical follow-up. Two follow -up visits (3 and 6 months) will be actively organized for all patients with a positive result in iELISA and/or molecular tests conducted at INRB/Kimpese laboratory, through active tracing by health facilities and community members. At the 3 month visit, a clinical examination and DNA/RNA sampling for molecular testing will be performed. At the 6 month visit, adverse events and disease status will be assessed based on clinical signs or symptoms. After the 6-month visit, all patients with a confirmed gHAT infection will be invited to come back to health facility 12, 18 and 24 months after treatment, following WHO guidelines, to confirm cure. ;
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