The malacofauna vector of human schistomes of the four Kimpese rivesis is made of three gastropods molluscs species. They are Biomphalaria pfifferie KRAUSS (1848), Bulinus forskalii EHRENBERG, 1831, and B. globosus MORELET, 1866. The results on the parasitological profile show that sex and age influenced the contamination. Children at school age are more infected (mostly boys), that situation is promoted by bathing in these four Kimpese lotic systems. For adults, on the other hand, women are slightly more affected than men due to their permanence in rivers infested by schistosome cercariae.