Post-Decade Ivermectin Compliance and Entomological Assessment of Onchocerciasis in Inyele District, Olamaboro LGA, Kogi State, Nigeria
DOI:
https://doi.org/10.63561/jhssr.v2i4.1107Keywords:
Onchocerciasis, Simulium spp, Entomological survey, Ivermectin compliance, Neglected tropical DiseaseAbstract
Onchocerciasis, commonly referred to as river blindness, poses a significant health challenge, particularly in sub-Saharan Africa. Despite decades of Ivermectin administration via the mass drug administration (MDA) strategy, this neglected tropical disease persists in many regions, including parts of Kogi State. Hence, assessing Ivermectin compliance and conducting entomological surveys in Olamaboro LGA of Kogi State, Nigeria, is necessary. This study administered structured questionnaires to residents of selected communities to measure Ivermectin compliance, captured and dissected Simulium spp., and further detected the presence of Onchocerca larvae in these flies. The results of this study revealed 90.8% compliance with Ivermectin, with residents reporting complete compliance (100%) in Ubalu Community, 93% compliance in Ogoh Inyele Community, and 80.5% in Uloko Community. Statistical analysis revealed no significant difference between participants’ socio-demographics and their compliance with Ivermectin. Furthermore, 113 blackflies were captured, and 31% of them were confirmed parous. Morphological identification revealed that none (0%) of the blackflies harboured Onchocerca volvulus larvae. With the high Ivermectin compliance rates and the absence of infected vectors in this study, the ongoing transmission of this disease is confirmed to be suppressed. However, there is a need to ensure continuous Ivermectin MDA and encourage high community participation to achieve the elimination deadline set by the World Health Organisation by 2030.
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