Comparative study of protein and lipid parameters within a homogenous sample of 144 non-immune subjects having stayed for four months in Central Africa, suggests a dysglobulinemia more significant in the infected group. This dysglobulinemia affects in particular the IgM which are negatively correlated with cholesterol, positively with apoproteins A2 and H.D.L. Such a peculiar profiling involving immunoglobulins, apoproteins and cholesterol is rapidly regressive after stopping exposure to parasitic risk. It appears as an adaptation syndrome--or resistance--to tropical environment.