PREVALENCE OF INTESTINAL WORMS AMONG SCHOOL CHILDREN IN CHAD: IMPORTANCE OF HIGHLIGHTING THE CONCENTRATION METHOD IN FECAL EXAMINATION
Mahamat Alio Hamit,, Abdelsalam Tidjani*, Brahim Boy Otchom, Mahamat Bechir, Et Charles Félix Bilong Bilong
ABSTRACT
A third party of humanity is infested by intestinal worms. Although not always easy to discover the impact on health of parasitism by intestinal worms is admitted all the same. In Chadian medical analysis laboratory, the analysis limit to a direct coprological examination. This work aims to establish the prevalence rates of the intestinal parasites from three technics of parasitic coprology, to improve the diagnosis in our analysis laboratories and insure better medicinal prescriptions in our hospitals. The present study took place in Sahelian (Abéché, Bokoro and N’Djamena) and Sudanese (Bongor, Pala, Torrok and Lai) zones. Every stool was submitted to a direct macroscopic examination and two technics of concentration. All eight species of Helminthes (Hymenolepis nana, Taenia saginata, Taenia solium, Ascaris lumbricoides, Ancylostoma spp., Trichuris trichiura, Strongyloides stercoralis and Schistosoma mansoni) were found during this investigation. The global rates of infection, that is by at least a species of parasite different and equal were in 36.1% for MOD, 51.1% for MFE and 55.2% for MKA. The number of cases of infections mono-, bi- and tri specific revealed in this work was 362 by the MOD, 512 by the MFE and 554 by MKA. Since prevalence’s and number of very high parasitic types of associations observed by the methods of concentration in this study, it would be necessary to incite laboratories of medical analyses of hospitals in Chad to use technics of concentration for the improvement of coprological diagnosis.
Keywords: Intestinal helminthiases, children, school environment, Sahelian zone, Sudanese zone, Chad.
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