The Prurigo strophulus in Brazzaville: Demonstration of vectors and study of some associated bioecological parameters
2013
Lenga, A. (Marien Ngouabi Universite, Congo (Brazzaville). Lab. of Bio-ecology of Vertebrates and Invertebrates) | Loumingou, I.A.L. (Hospital Univ. of Brazzaville (Brazzaville). Dept. of Dermatology and Venereology) | Moussounda, M.M. (Marien Ngouabi Universite, Congo (Brazzaville). Lab. of Bio-ecology of Vertebrates and Invertebrates) | Vouidibio, J. (Marien Ngouabi Universite, OUA (Brazzaville). Research Group on Biology and Ecology of Animal Populations)
Strophulus prurigo, chronic skin disease widespread in Africa in general and the Congo - Brazzaville in particular is studied here in a neighborhood of the city of Brazzaville located near a watercourse. Studies conducted at 100m and 500m from the river show a frequency of infestation which is highest near water. Two arthropods are reported to cause infections in prurigo strophulus: dipteran Simulidae, Simulium albivirgulatum and an Ixodidae mite, Ixodus ricinus L. The notion of a genetic transmission of this disease is hypothetical. Suspicion of a hereditary origin of this infection is not confirmed here. Field of patients with prurigo does not seem to be a topic. The study of daily activity rhythms of Simulium albivirgulatum shows that this insect is well suited to urban areas with peaks of both diurnal and crepuscular activity, providing important human parasite pressure. The dermatological consequences are all the more important that individuals are less covered mainly in the limbs according to their clothing habits. In addition, our results indicate a predominance of women in the prevalence of this infection, regardless of the age groups considered.
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