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factors affecting variations in exposure to infections by leishmania donovani in eastern sudan.a cross-sectional survey was carried out in gedaref state, eastern sudan to investigate the prevalence of positive leishmanin skin tests and environmental factors related to leishmania donovani infection. a total of 3835 people living in 11 villages in 3 regions were screened. soil types and tree densities were determined in 33 villages inhabited by 44 different tribes. the highest rates of positive skin tests were in rahad region (33.9%), atbara (21.6%) and gedaref (10.6%), with an average of 2 ...200315748079
operational validation of the direct agglutination test for diagnosis of visceral leishmaniasis.the validity of the direct agglutination test (dat) for visceral leishmaniasis (vl) was studied with a standardized field kit on 148 clinically suspected persons and 176 healthy controls recruited between 1993 and 1994 from an endemic area in gedaref state, sudan. a sensitivity of 95.9% and a specificity of 99.4% were found at a 1: 8,000 cut-off titer when parasitologically confirmed cases were compared with healthy controls. while corroborating previously reported sensitivity and specificity es ...19999988336
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