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| G. swynnertoni | G. pallidipes | |
| Mouthpart onlyT. vivax group | 6.43(5.7–7.2) | 2.20(1.6–2.9) |
| Mouthpart/midgutT. congolense group | 2.11(1.7–2.6) | 1.24(0.80–1.8) |
| Salivary glandT. brucei group | 0(0–0.085) | 0(0–0.18) |
Trypanosomes were identified by dissection and microscopic examination of tsetse and classified according to the criteria of Lloyd and Johnson [13]. Confidence limits are 95% exact binomial confidence intervals.
