Experimental evaluation of xenodiagnosis to detect trypanosomes at low parasitaemia levels in infected hosts

Open Access

Table I.

Results of xenodiagnosis with G. m. submorsitans fed on cows infected with T. congolense at different parasitaemia.

Blood parasitaemia	2 Tryp ¹/field		5 Tryp/40 fields		1 Tryp/80 fields		1 Tryp/120 fields		1 Tryp/160 fields
DPI ² flies	D2	D5	D2	D5	D2	D5	D2	D5	D2	D5
NDF³	19	18	20	17	18	18	20	20	20	19
NDM ⁴	19	18	20	20	15	16	20	19	18	18
NPF ⁵	16	1	19	1	10	0	0	0	5	0
NPM ⁶	14	0	11	1	12	1	0	0	3	0
% PF ⁷	84.2	5.6	95.0	5.9	55.6	0.0	0.0	0.0	25.0	0.0
% PM ⁸	73.7	0.0	55.0	5.0	80.0	6.3	0.0	0.0	16.6	0.0

Tryp: trypanosome

DPI: days post infective meal

NDF : number of dissected female

⁴

NDM: number of dissected males

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NPF: number of positive females

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NPM: number of positive males

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PF: positive females

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PM: positive males.

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