SEROPREVALENCY OF HIV-INFECTION AMONG TOU AREGS AND PEULS-BORORO OF NIGER

A seroepidemiological study of endemic treponematosis (bejel) in Niger allows us to realise an anonymus non correlated screening of VIH infe ction in Nomads: Touaregs of Tchirozerine (Agadez), Peuls Bororo of Be rmo (Maradi). On the 424 Touaregs screened only one was seropositive t o VIH2 infection confirmed with Western blot that means 0,23 % of sero prevalency comparable to that 0,50 % found in the general population. The seroprevalency of trepronematosis (VDRL + TPHA +) is 7 % in the ra nge of 5 to 15 years old (80 %), period which corresponds to the trans mission of Bejel. Moreover this population don't travel to the seabord er countries. Concerning the 213 of the Peuls Bororo screened we had o nly 3 indetermined reactions to Western blot I and 2, despite the high seroprevalence of the treponematosis (VDRL + TPHA +): 22 % mostly in the subjects of more than 15 years old (89,36 %) which is the sexuel i ntercourse and exodus period to the seaborder countries, where 66 % of our VIH patients are infected.