Controlling onchocerciasis by community-directed, ivermectin-treatment programmes in Uganda: why do some communities succeed and others fail?

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Abstract
In Uganda, human onchocerciasis is controlled by annual, mass, community-directed, ivermectin-treatment programmes (CDITP) in all endemic communities where the prevalence of the disease is > or = 30%. This is a practical, long-term and cost-effective strategy. In some communities, this system succeeds in providing treatment at the desired level of coverage (i.e. 90% of the annual treatment objective, which is itself equivalent to all those individuals eligible to take ivermectin). Other communities, however, fail to reach this target. The aim of the present study was to determine the factors that were significantly associated with success or failure in achieving this target. The data analysed were answers to a questionnaire completed by 10 household heads randomly selected from each of 64 randomly selected endemic communities (of which 36 succeeded and 28 failed to reach their coverage target) in the four districts of Kabale, Moyo, Nebbi and Rukungiri. Among the programme-related factors investigated, success was associated, at a statistical level of significance (P < or = 0.05), with involvement of community members in: (1) decisions about the execution of the programme; (2) attendance at health-education sessions; (3) selection of the community-based distributors (CDB); and (4) rewarding CBD in kind. In general, the involvement of community members in the planning and execution of a CDITP (and the resultant sense of pride in community ownership) was more likely to produce successful results than when external health workers or even community leaders or local councils took responsibility.

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