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It was anticipated that between two and three years would be required to confirm that tsetse control did indeed reduce tsetse numbers, and that a reduction in trypanosome prevalence in cattle would also follow. However, the impact of the second tsetse control project was less than expected and the study was extended to allow researchers to investigate the reasons for the poor performance of the intervention on tsetse numbers. This allowed assessments to be made on the impact of the intervention on levels of livestock productivity over a comparatively long period of time.  |
