[Interepidemic supervision of the leishmania focus of Keur Moussa (Thies, Senegal)].

A supervision of the focus of human cutaneous leishmaniasis of Keur Moussa has been carried out in 1988-1989 and in 1991-1992. Among the 13 species gathering the 10,144 phlebotomine sandflies trapped, two belong to genus Phlebotomus, the others to genus Sergentomyia. Phlebotomus duboscqi, that has been found out by Deded et al. in 1980 as the vector of this leishmaniasis in Senegal, is the most represented species after Sergentomyia schwetzi, with respectively 32.3 and 28.5% of the found during these two periods. It is twice more abundant and frequent in the monastery area than the religious one. This difference may be due to the better micro-climatic conditions, the abundance of rodents and the human proximity. After the rainy seasons that influence a lot P. duboscqi's activity, the density of phlebotomine sandflies makes a progressive rise, as well as the temperature and humidity, to reach two maxima in April-May and July-August. Parasitological studies on females of phlebotomine sandflies and rodents Arvicanthis niloticus, Mastomys erythroleucus and Cricetomys gambianus are negative. This focus seems to be again in an inter-epidemic phase.