Enquête entomologique dans le foyer historique de trypanosomose humaine africaine de Bendjé (Gabon)

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Abstract

The situation of human African trypanosomiasis (sleeping sickness) is poorly known in Gabon. Most of the historical foci have not been investigated for more than 15 years. Few cases are passively recorded from the historical focus of Bendjé; they involved mainly fishermen but determining their contamination site is difficult because of their mobility due to their activity. The presence of these cases in that focus could favour its reactivation if the vector is still there. In order to assess a potential transmission risk in that area, an entomological survey has been carried out in it. Traps were set up during four days in different habitats used by humans during their daily activities. Three species of tsetse flies (Glossina palpalis palpalis, G. pallicera newsteadi and G. caliginea) were caught and two species of trypanosomes (Trypanosoma vivax and T. brucei s.l.) were identified by PCR. These results suggest the presence of an animal transmission cycle. Human-flies contact was confirmed in all type of habitats but no transmission was quantified in the mangrove.

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Kohagne Tongué, L., Gounoue Kamkuimo, R., Mengue M’eyi, P., Kaba, D., Louis, F. J., & Mimpfoundi, R. (2011, November). Enquête entomologique dans le foyer historique de trypanosomose humaine africaine de Bendjé (Gabon). Parasite. https://doi.org/10.1051/parasite/2011184303

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