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  • Title: Differentiation of Trypanosoma brucei, T. rhodesiense, and T. gambiense by the indirect fluorescent antibody test.
    Author: Latif BM, Adam KM.
    Journal: Bull World Health Organ; 1973; 48(4):401-7. PubMed ID: 4587481.
    Abstract:
    Epidemiological studies, if they are to lead to appropriate preventive procedures, require knowledge of the host distribution of the parasite. Progress in the epidemiology of African trypanosomiasis is restricted by the lack of a reliable and simple method of differentiating Trypanosoma brucei, T. rhodesiense, and T. gambiense. The recently introduced blood inoculation infectivity test promises to fulfil this need by distinguishing T. brucei from T. rhodesiense, but it would not be suitable for separating T. brucei from T. gambiense, since rats and mice are frequently refractory to infection by fresh isolates of T. gambiense. Previous studies had indicated that the indirect fluorescent antibody test might differentiate not only the subgenera of the salivarian trypanosome species but also members of the subgenus Trypanozoon. A method of performing the test is described that enables T. brucei, T. rhodesiense, and T. gambiense to be differentiated by the titre of the sera. The method might be used in conjunction with the blood inoculation infectivity test to distinguish between new isolates of the subgenus Trypanozoon in East Africa, and also to search for possible animal reservoirs of T. gambiense in West Africa.
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