1Professor F. J. AGUILAR, Parasitology Department, School of Medicine, University of San Carlos; Director, Instituto de Enfermedades tropicales Rodolfo Robles; Sanidad publica, Guatemala, Guatemala

2Dr E. AKWEI, Commissioner for Health, Ministry of Health, Accra, Ghana (Vice-Chairman)

3Mr P. AMOUSSOUGA, Entomologiste médical, Chargé de recherches à la Santé publique, Ministère de la Santé publique, Cotonou, Dahomey

4Mr G. BALAY, Entomologiste, ORSTOM, Section Onchocercose, Centre Muraz, OCCGE, Ouagadougou, Upper Volta

5Dr A. BANGOURA-ALECAUT, Directeur du Service National des Grandes Endémies, Ministère du Domaine social (Santé publique et Affaires sociales), Conakry, Guinea

6Dr F. H. BUDDEN, Consultant Ophthalmologist, Leamington Spa, England

7Dr G. J. BURTON,* Scientist Director (Medical Entomology), Viral Leukemia and Lymphoma Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA

8Dr F. J. C. CAMBOURNAC, Director, National School of Public Health and Tropical Medicine, Lisbon, Portugal

9Mr J. B, DAVIES, External Staff, Medical Research Council, Trinidad Regional Virus Laboratory, Port-of-Spain, Trinidad

10Mr L. DESCHAMPS, Socio-économiste, Chargé de Mission à la Société d'Aide technique et de Coopération (SATEC), Paris, France

11Professor G. DESTANNE DE BERNIS, Directeur de l'Institut d'Etudes sociales, Faculté de Droit et des Sciences économiques, Université de Grenoble, Grenoble, France

12Mr Z. DEUTSCHMAN, Professional Associate, Tropical Health, Medical-Sciences Division, National Academy of Sciences, Washington, D.C., USA

13Dr B. O. L. DUKE, Director (External Staff, Medical Research Council), Helminthiasis Research Unit, Kumba, Cameroun (Rapporteur)

14Professor A. M. FALLIS, Head, Department of Parasitology, School of Hygiene, University of Toronto, Toronto, Canada

15Dr R. GARMS, Liberia Research Unit of the Tropical Institute Hamburg, Monrovia, Liberia

16Dr H. A. JAMNBACK, Associate Scientist (Entomology), New York State Museum and Science Service, Albany, N.Y., USA

17Professor P. G. JANSSENS, Director, Prince Leopold Institute of Tropical Medicine, Antwerp, Belgium (Chairman)

18Dr H. P, JOURNIAC, Chargé de Mission, Secrétariat d'Etat aux Affaires étrangères chargé de la Coopération (Département Santé), Paris, France

19Dr R. LE BERRE, ORSTOM, Chef de la Section Onchocercose, Centre Muraz, OCCGE, Bobo-Dioulasso, Upper Volta

20Mr J. P. McMAHON, Entomologist, London School of Hygiene and Tropical Medicine, Winches Farm Field Station, St. Albans, England

21Dr Botha DE MEILLON, Project Leader, South East Asia Mosquito Project, Smithsonian Institution, US National Museum, Washington, D.C., USA

22Dr R. C. MUIRHEAD-THOMSON*, London School of Hygiene and Tropical Medicine, London, England

23Dr G. K. NOAMESI, Senior Research Officer (Ghana Academy of Sciences), Onchocerciasis Unit, Accra, Ghana

24Dr M. M. OVAZZA, Inspecteur général de Recherches, ORSTOM, Paris, France (Rapporteur)

25Dr O. PLUG,* Controleur délégué, Fonds européen de Développement, Cotonou, Dahomey

26Dr P. RICHET, Secrétaire Général, OCCGE, Bobo-Dioulasso, Upper Volta

27Dr M. J. RIVES, Directeur, Service National de Lutte Contre les Grandes Endémies, Ministère de la Santé publique, Abidjan, Ivory Coast

28Dr A. ROLLAND, Médecin Chef du Groupe Ophtalmologique Mobile du Service National de la Santé rurale, Ouagadougou, Upper Volta

29Professor I. G. STEWART, Department of Economics, University of Edinburgh, Edinburgh, Scotland

30Dr B. B. WADDY, Reader in Tropical Hygiene, Ross Institute, London School of Hygiene and Tropical Medicine, London, England

31Dr J-M. WEIR*, Director, Medical and Natural Sciences, The Rockefeller Foundation, New York, N. Y., USA.

Representatives

32Mr L. M. DOMINGUEZ, International Bank for Reconstruction and Development, Washington, D.C., USA

33Food and Agriculture Organization of the United Nations*

Observers

34Mr J. P. COINTEPAS, Directeur de la Mission ORSTOM, Tunis

35Fonds européen de Développement du Marché commun (FED)*

36Organisation de Coordination pour la Lutte Contre les Endémies en Afrique centrale (OCEAC)*

Joint US-AID/OCCGE/WHO Secretariat

37Dr N. ANSARI, Chief, Parasitic Diseases, Division of Communicable Diseases., World Health Organization, Geneva, Switzerland (Secretary)

38Dr J. R. BAGBY,* Deputy Director, National Communicable Disease Center, Atlanta, Georgia, USA

39Dr A. C. CURTIS,* Chief, Public Health Division, Office of Institutional Development, Bureau for Africa, Agency for International Development, Washington, D.C., USA

40Dr S, DOLO, Ministre de la Santé, Bamako, Mali

41Dr T. D. DUBLIN, Research Advisor, Health Service, Office of the War on Hunger, Agency for International Development, Washington, D.C., USA

42Mr F. B. ELDER, Sanitary Engineer, Public Health Division, Office of Institutional Development, Bureau for Africa, Agency for International Development, Washington, D.C., USA

43Miss J. FORMAN, Secretary, Parasitic Diseases, Division of Communicable Diseases, World Health Organization, Geneva, Switzerland

44Dr C. W. GOECKEL, Epidemiologist, Parasitic Diseases, Division of Communicable Diseases, World Health Organization, Geneva, Switzerland

45Dr L. M. HOWARD,* Director, Health Service, Office of the War on Hunger, Agency for International Development, Washington, D.C., USA

46Mr ELHADJ ISSA IBRAHIM, Président du Conseil d'Administration de l'OCCGE, Ministre de la Santé et des Affaires sociales, Niamey, Niger

47Dr N'DIA KOFFI,* Ministre de la Santé publique et de la Population, Abidjan, Ivory Coast, ancien Président du Conseil d'Administration de l'OCCGE.

48Dr E. H. NEWBERGER, Peace Corps Physician, Agency for International Development, Ouagadougou, Upper Volta

49Mr H. A. RAFATJAH, Sanitary Engineer, Programme and Planning, Division of Malaria-Eradication. World Health Organization, Geneva, Switzerland

50Mrs J. SOTIROFF, Scientist, Parasitic Diseases, Division of Communicable Diseases, World Health Organization, Geneva, Switzerland

51Dr C. SOW, Secrétaire général adjoint de l'OCCGE, Bobo-Dioulasso, Upper Volta

WHO Regional Office and Field Staff

52Dr M. V. J. BLANC, Adviser on Communicable Diseases, WHO Regional Office for Africa, Brazzaville, Republic of the Congo

53Dr O. W. CHRISTENSEN, The WHO Representative in Tunisia, Tunis, Tunisia

54Professor L. LAPEYSSONNIE, Faculté de Médecine (Médecine préventive et sociale), Tunis, Tunisia

55Mr J. D. M. MARR, Entomologist, WHO Inter-Country Onchocerciasis Advisory Team, Accra, Ghana

56Dr H. ROSSLER, WHO Senior Adviser, Communicable Eye Disease Control Project, Atbara, Sudan

57Dr P. D. SCHEFFEL, WHO Senior Medical Adviser, WHO Inter-Country Onchocerciasis Advisory Team, Accra, Ghana