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Parasitic Helminths and Zoonoses in Africa

Edited By: CNL Macpherson and PS Craig

308 pages, Illus.

Chapman & Hall

Hardback | Dec 1990 | #10156 | ISBN: 0044455658
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NHBS Price: £207.00 $267/€227 approx

About this book

Parasitic worms (helminths) are a diverse and geographically widespread group of organisms which are responsible for infecting millions of people throughout the world. Many of these parasitic helminths are either zoonoses (disease agents naturally transmitted between vertebrate animals and man) or have evolved from animal parasites. Helminthic parasitism may be responsible for asymptomatic, mild, severe and even lethal infections in humans and some vertebrate animals. Many of these helminth species are primarily resticted to tropical and subtropical areas and others have greater prevalence in warm climates. In Africa, parasitic helminths, many of which are zoonoses, are of significant public health importance, are responsible for economic losses, may hamper rural development programmes and generally slow down the pace of economic development. Human migration and movements due to the ever expanding population, wars, famine or modiciation of the environment, and the increased proximity of people to areas inhabited by a great diversity of wildlife species, make zoonoses of special interest in Africa. Patterns of transmissions of helminth parasites (in Africa) are highly influenced by social and cultural interactions and by the unique variety of wildlife and habitats. It is not surprising therefore that approaches to the study and control of parasitic zoonoses usually requires a complex intersectorial co-operation between medical and veterinary experts, parasitologists, biologists, zoologists, demographers, anthropologists and engineers. This book is a selective, rather than a comprehensive, compilation on parasitic helminths, with some emphasis on helminth zoonoses, particularly those which are important in the context of Africa. Furthermore, the importance of animal models has been highlighted for some helminth parasites. The title of this book strongly reflects the three areas, ie. parasitic worms, zoonoses and Africa, in which the work of one man, Professor George Stanley Nelson, has made a major impact over a 40 year period. This volume was conceived with George Nelson Nelson very much in mind and is dedicated to him on his retirement. The subject of the chapters strongly reflect areas where he contributed directly or indirectly, and all the authors have worked with him or been influenced by him.


Part 1 Helminthic zoonoses in African perspective: introduction - the scientific challenge, the social challenge; dog and man in Africa; cattle and man in Africa; future medical-veterinary-zoological cooperation, C.W. Schwabe. Part 2 Echinococcosis - a plague on pastoralists : life cycle; current status of human hydatidosis in Africa; public health importance of "echinococcus" infections in Africa; diagnosis of human hydatiodos; serology treatment of human dydatidosis; domestic intermediate hosts; role of domestic dogs; wildlife cycles in Africa; species and strain differences of "echinococcus" in Africa; control, C.N.L.Macpherson and P.S.Craig. Part 3 The zoonotic taeniae of Africa: history and biology; epidemiology; zoonotic importance; meat inspection; public health measures - economic impact; diagnosis - taeniasis cysticercosis; treatment; immunoprophylaxis, M.M.H.Sewell and L.J.S.Harrison. Part 4 Trichinella in Africa and the "nelsoni" affair: north Africa; Africa south of the Sahara; epidemiology; the nelsoni affair; l'envoi, W.C.Campbell. Part 5 The African "hookworm" problem - an overview: importance and distribution; other hookworm-like parasites - ternidens, trichostrongylus, oesophagostomum, strongyloides; zoonotic aspects; clinical and immunological aspects; treatment, J.M.Goldsmid. Part 6 Onchocerciasis - river blindness: introduction - personal perspective, introduction to the infection; life cycle - parasite biology in the intermediate host, parasite biology in the definitive host; pathology - clinical manifestations of disease, immunological responses; epidemiology and control within Africa - geographic variations in transmission and disease, filarial parasites of animals in vectors of human onchocerciasis, transmission of "onchocerca" parasites between man and animals, current state of immunodiagnosis, the onchocerciasis control programme (OCP) in West Africa; experimental investigations with laboratory models - animal infections with "o volvulus", "onchocerca" infections of animals as models of human onchocerciasis; natural infections of rodents with potential models, for onchocerciasis, A.E.Bianco. Part 7 Dracunculus in Africa: public health importance of dracontiasis; current situation in Africa; control measures - provision of safe drinking water, filtration of water, prevention of water contamination, treatment of ponds; anthelmintic treatment; dracunculiasis as a zoonosis, R.Muller. (Part contents)

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