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pubmed-article:19810617pubmed:dateCreated2009-10-8lld:pubmed
pubmed-article:19810617pubmed:abstractTextDiseases caused by environmental contamination by micro-organisms, including intestinal helminths and protozoa, are prevalent in developing countries. According to some authors, their strong expansion in some zones of these countries is due primarily to favourable climatic conditions, combined with inadequate hygiene measures and cleaning and the generally low socio-economic level. Progress in disease control has resulted from new studies that improve our understanding of the epidemiology of helminthiases and from the availability of simple tools that are inexpensive and effective against these diseases (chemotherapy with albendazole and mebendazole). On the other hand, surprisingly few such studies have looked at intestinal protozoa, although the WHO reports that approximately 480 million individuals throughout the world are infested by amoebiasis caused by the protozoon Entamoeba histolytica and that 40,000-110,000 people die from it each year. Giardiasis, a cosmopolitan parasitosis, is due to another intestinal protozoon called Giardia intestinalis. To help develop a database on these parasites, we conducted a cross-sectional epidemiological survey in the Man region in western Côte d'Ivoire. Its objectives were to determine the prevalence of intestinal protozoa, to evaluate polyparasitism and to assess the spatial distribution of the pathogenic protozoal species, E. histolytica and G. intestinalis. Overall, 4466 stools samples taken from pupils aged 6 to 16 years of age at 57 different schools were analyzed under an optical microscope by the formol-ether stool concentration method, after preservation in sodium acetate-acetic acid-formalin (SAF). The most common protozoa species in this area were Endolimax nanus (83.8%) and E. coli (74.7%). The regional prevalence of G. intestinalis was 17.5% and of E. histolytica/E. dispar 11.3%. Both species were found in each of the 57 schools. The prevalence of E. histolytica/E. dispar exceeded 15% in six schools, and its spatial distribution was highly disparate. On the other hand, three large areas with substantial G. intestinalis transmission were identified. Polyparasitism of intestinal protozoa is very frequent in these areas; 80.2% of pupils carried at least 2 species. This work confirms the presence and breadth of protozoa species in the Man region. Understanding the spatial distribution of the principal areas where pathogenic protozoa species are transmitted may help to develop programmes for disease control that combine chemotherapy and preventive measures.lld:pubmed
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pubmed-article:19810617pubmed:authorpubmed-author:YapiAhouaAlld:pubmed
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pubmed-article:19810617pubmed:volume18lld:pubmed
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pubmed-article:19810617pubmed:pagination215-22lld:pubmed
pubmed-article:19810617pubmed:dateRevised2009-11-19lld:pubmed
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pubmed-article:19810617pubmed:articleTitle[Prevalence and polyparasitism of intestinal protozoa and spatial distribution of Entamoeba histolytica, E. dispar and Giardia intestinalis from pupils in the rural zone of Man in Côte d'Ivoire].lld:pubmed
pubmed-article:19810617pubmed:affiliationUFR biosciences, université d'Abidjan-Cocody, 02 BP819 Abidjan, Côte-d'Ivoire. mamadou_ouatt@yahoo.frlld:pubmed
pubmed-article:19810617pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:19810617pubmed:publicationTypeEnglish Abstractlld:pubmed