[Experience in raising the effectiveness of diagnosing the Gambian type of trypanosomiasis].

A method of detecting the parasites in their low blood amounts by using DEAE cellulose column chromatography is described and compared to other laboratory diagnostic techniques, in particular, for trypanosomiasis. A screening of 250 patients with suspected trypanosomiasis was performed. Serological survey and studies of primary medical documentation in Angola sanitary areas endemic for Gambian trypanosomiasis in 1983-1985, preceded the selection of the examined group. In spite of some limitations of the method, in allowed one to detect Trypanosoma in 17% patients, whose infection was not revealed by classic methods. The method allowed one to reveal more cases of infection (44.2%) than the study of a lymph nodal punctate (37.5%), blood (24%) or cerebrospinal fluid (13%).