Fig. 4From: Developing a continental atlas of the distribution and trypanosomal infection of tsetse flies (Glossina species)Absence of detection and presence of T. vivax-type (a), T. congolense-type (b) and T. brucei-type infections (c) in tsetse flies. White circles: absence of detection. Coloured circles: presence. Diagnostic method: dissection and microscopic examination [27]. Minimum sample size: 30 flies. Data collection period: January 1990 – December 2014Back to article page