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Trente ans de lutte contre l’onchocercose en Afrique de l’Ouest. Traitements larvicides et protection de l’environnement

Laurent Yaméogo
Christian Levêque
Jean-Marc Hougard

Joint US-AID/OCCGE/WHO technical-meeting on the feasibility of onchocerciasis control

Annex 2. Work programme of the international study mission

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1In accordance with recommendation 6.5 of the present report, it is proposed that an international study mission be formed with the following terms of reference: (1) to present, in the shortest time possible, an information dossier on the area recommended as the one to receive priority in an inter-country onchocerciasis control programme, on the understanding that this programme may be later extended, by successive stages, to embrace neighbouring onchocerciasis foci in the African savanna zone; (2) to undertake, subsequently, a study on the socio-economic aspects of onchocerciasis control in relation to regional development. The purpose of these studies and the programme for carrying them out are specified below.

2Accredited to the Governments of the seven countries concerned in the initial onchocerciasis project, i.e. Dahomey, Ghana, Ivory Coast, Mali, Niger, Togo and Upper Volta, the international study mission must have available all the existing documents as well as be able to make any contact it considers necessary in order to obtain authoritative information and opinions.


3To compile this dossier, the mission will be required. to assemble and analyse all available information on the items listed below which are indispensable to prepare a plan of operations and, in a more general way, to work out a-global strategy of onchocerciasis control covering the entire recommended area.

41.1 Review of the studies carried out

  1. Health situation in the project area, in particular the collection of local statistics pertaining to water-related diseases. Review of health resources and equipment. As regards onchocerciasis, the distribution, importance and evolution of the disease, and knowledge of the breeding-places found.
  2. Hydrological and climatological data.
  3. Topographical data (existing maps, lay-out of the road network, location of villages, schools, sanitation posts, etc.; boundaries, dates, scales, etc., of the aerial photos, etc.).
  4. Soil studies (soil surveys, suitability for crops, etc.).
  5. Demographic and sociological data: the size, distribution and evolution of the population both on the plateaux and in the valleys; sociological studies already carried out or in progress on the groups affected by the development of the valleys; development activities in progress and supervisory staff on the spot, etc.
  6. Development potential of the various regions in the recommended area. Inventory and description of all the national, bilateral and/or international development projects at local or national level that are in progress or planned in the recommended area. Their global incidence, both in respect of benefits and expenditures, on the enlarged onchocerciasis control project (operations and engineering works of common use to onchocerciasis control and development plans, changes made in the location of communities, etc.).

5On the basis of the existing documents and in accordance with the purpose of its study, the mission will have to determine the gaps in the said documents and define very precisely what measures need to be taken in order to fill them as well as the cost these measures would entail.

6Furthermore, this documentation will contain not only a summary of the projects being worked out in the various spheres but also an indication of the priority given to them by the responsible authorities. It will also list the existing means and resources which could be utilized for the project.

71.2 Onchocerciasis control

  1. Resources in men, equipment and money at present being used for onchocerciasis control. Extension of the operations that are planned in present programmes, and their financing. Means and resources likely to be made available to the project.
  2. Preparation of a draft plan of operations for the project and of a cost estimate by year and by type of expenditure, including, if possible, the cost of maintenance operations after completion of the actual control campaign.

81.3 Exploratory study on expected benefits to be derived from the implementation of the project, based, in particular, on the examples provided by areas where control operations have been followed by development activities.

91.4 Preparation of the study on the socio-economic aspects of onchocerciasis control in relation to regional development: definition of the parameters to be used and determination of the regions best suited for the carrying out of this study.


10The main-object of this long-term study is to analyse the interrelationships that exist between economic development and disease control campaigns. In order to evaluate these interrelationships, such a study demands that a methodology be developed which could then be perfected and tested in parallel with the onchocerciasis control campaign.

© IRD Éditions, 2003

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