development of multiple drug resistance of trypanosoma congolense in zebu cattle under high natural tsetse fly challenge in the pastoral zone of samorogouan, burkina faso.preliminary data from an ongoing epidemiological survey in the pastoral zone of samorogouan (kénédougou) indicate the occurrence of multiple-drug-resistant trypanosoma congolense. despite frequent trypanocidal drug treatments with diminazene aceturate (berenil, hoechst) at 7 mg/kg body weight (bw) at intervals of 2 to 4 weeks, no significant drop in the prevalence of african animal trypanosomosis (aat) was observed. to examine a suspected drug resistance, 20 zebu cattle, naturally infected with ...19921359750
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