Trypanosome infections in naturally infected horses and donkeys of three active sleeping sickness foci in the south of Chad

Table 2 Trypanosome infections according to animal species

Animal species	NE	RDT+	T+	PCR results
Animal species	NE	RDT+	T+	TB	TC+	TCS+	TCF+	TV+	TBG+	Total^a
Donkeys	155	32 (20.6%)	22 (14.2%)	49 (31.6%)	27 (17.4%)	8 (5.2%)	19 (12.3%)	6 (3.9%)	2 (1.3%)	61 (39.3%)
Horses	131	22 (16.8%)	14 (10.7%)	35 (26.7%)	20 (15.3%)	6 (4.6%)	14 (10.7%)	7 (5.3%)	1 (0.8%)	40 (30.5%)
Total	286	54 (18.9%)	36 (12.6%)	84 (29.4%)	47 (16.4%)	14 (4.9%)	33 (11.5%)	13 (4.5%)	3 (1.0%)	101 (35.3%)
χ²	–	0.69	0.79	0.82	0.24	0.05	0.17	0.35	0.19
P-value	–	0.41	0.37	0.37	0.62	0.82	0.68	0.55	0.66

^aThe numbers contained in this column are lower than the sum of TB⁺, TC⁺ and TV⁺ because some animals were carriers of mixed infections
Abbreviations: NE, number of animals examined; RDT, rapid diagnosis test; T+: trypanosome infections revealed by capillary tube centrifugation; TB, trypanosomes belonging to the subgenus Trypanozoon (includes TBG); TC, Trypanosoma congolense (includes TCF and TCS); TCS, Trypanosoma congolense savannah type; TCF, Trypanosoma congolense forest type; TV, Trypanosoma vivax; TBG, Trypanosoma brucei gambiense

ISSN: 1756-3305