Environmental control of schistosomiasis through community participation in a Moroccan oasis

Tropical Medicine and International Health - Tập 9 Số 9 - Trang 997-1004 - 2004
Eline Boelee1, Hammou Laamrani2
1International Water Management Institute, Addis Ababa, Ethiopia
2Ministry of Education, Tabriquet, Salé, Morocco

Tóm tắt

SummaryAkka oasis, in the province of Tata, southern Morocco, is one of the oldest foci of urinary schistosomiasis in Morocco where transmission is still taking place. We report the results of two studies: a cross‐sectional snail survey investigated the distribution of Bulinus truncatus in relation to habitat factors in the Akka traditional irrigation system. The presence of aquatic vegetation, especially Potamogeton sp. was identified as a key factor determining snail occurrence and abundance in canals, impoundments and isolated small puddles and streamlets in the Akka riverbed. In a participatory rapid appraisal, the community identified snail control as a way to reduce transmission of schistosomiasis. Without any further outside incentives, the local irrigation committee implemented repeated cleaning and vegetation removal in canals. A longitudinal study evaluated the effect of these measures on populations of B. truncatus. Snail and egg mass densities showed significant reductions after repeated vegetation clearing in the study sites. The participatory approach led to low‐cost, environment‐friendly schistosomiasis control measures that were effective and sustainable.

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Tài liệu tham khảo

Appleton CC, 1978, Review of literature on abiotic factors influencing the distribution and life cycles of bilharziasis intermediate host snails, Malacological Review, 11, 1

Boelee E, 1999, Irrigation ecology of schistosomiasis: environmental control options in Morocco

Brown D, 1994, Freshwater Snails of Africa and their Medical Importance. 2nd edn, 10.1201/9781482295184

Connet M, 1937, Existence d'un foyer de bilharziose vésicale à Akka (découvert pour la première fois), Maroc Médical, 63, 365

Hilali AMH, 1985, Snails and aquatic vegetation in Gezira irrigation canals, Journal of Tropical Medicine and Hygiene, 88, 75

Hosmer DW, 1989, Applied Logistic Regression

Laamrani H, 2002, Rôle des paramètres de conception, de gestion et de maintenance des périmètres irrigués dans la transmission et la lutte contre la bilharziose au Maroc central, Cahiers Agriculture, 11, 23

10.1046/j.1365-3156.2000.00606.x

Laamrani H, 2001, Proceedings of ‘Workshop on Medical and Veterinary Malacology in Africa’, Harare, Zimbabwe, November 8–12, 1999, Harare, Zimbabwe, 183

Laaziri M, 1982, Guide de la lutte contre la bilharziose

Lahlou O, 1985, La gestion des réseaux dans certains grands périmètres irrigués marocains, Hommes, Terre et Eaux, 59, 97

Madsen H, 1992, Intermediate hosts of schistosomes: ecology and control, Bulletin of the Society for Vector Ecology, 17, 2

10.2307/2403751

Meyer‐Lassen J, 1992, Studies on snail populations in the Rahad agricultural scheme, the Sudan, with special emphasis on Bulinus truncatus (Audouin) and Biomphalaria pfeifferi (Kraus) (Gastropoda: Planorbidae), snail intermediate hosts for species of the genus Schistosoma

Ministry of Agriculture, 1996, Second projet de développement de la petite et moyenne hydraulique (4 tranche). Périmètre d'Akka

Ministry of Health, 1998, Etat d'avancement des programmes de lutte contre les maladies parasitaires. Années 1996 and 1997

Mousa AH, 1972, The effect of water movements on the snail intermediate hosts of schistosomiasis in Egypt, Journal of the Egyptian Medical Association, 55, 255

Oomen JMV, 1990, Health and Irrigation. Incorporation of Disease Control Measures in Irrigation, a Multi‐ faceted Task in Design, Construction, Operation

10.1590/S0074-02762001000900003

10.1590/S0074-02761987000800032

10.1098/rstb.1984.0056

Tsafack F, 1997, Ecology of schistosome intermediate hosts in the Benue Upper‐Valley area

Watson JM, 1958, Ecology and distribution of Bulinus truncatus in the Middle East: with comments on the effects of some human activities in their relationship to the snail host on incidence of bilharziasis haematobia in the Middle East and Africa, Bulletin of the World Health Organization, 18, 833

World Health Organization (WHO), 1998, Report of the WHO Informal Consultation on Schistosomiasis Control

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Tropical Medicine and International Health

Tập 9 Số 9

997-1004

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