Panstrongylus geniculatus and four other species of triatomine bug involved in the Trypanosoma cruzi enzootic cycle: high risk factors for Chagas’ disease transmission in the Metropolitan District of Caracas, Venezuela

Table 4 Presence of T. cruzi in the digestive tracts of the triatomine species found in Caracas

		2007		2008		2009		2010		2011		2012		2013		Sub-total
Species	Sex/Stage	Neg	Pos	Neg	Pos	Neg	Pos	Neg	Pos	Neg	Pos	Neg	Pos	Neg	Pos	Neg	Pos
P.s geniculatus	Female	20	22	84	134	73	173	77	379	24	187	26	130	29	135	333	1160
	Male	14	11	61	103	71	115	122	368	13	122	23	75	10	80	314	874
	NIII	0	1	1	1	0	6	2	4	1	0	2	1	0	0	6	13
	NIV	0	5	5	2	6	7	2	8	1	0	4	4	3	7	21	33
	NV	0	1	0	1	3	3	2	3	1	2	1	2	0	0	7	12
	Sub-total	34	40	151	241	153	304	205	762	40	311	56	212	42	222	681	2092
T. maculata	Female	0	0	0	0	1	0	1	2	0	1	0	1	1	0	3	4
	Male	0	0	1	0	0	0	0	0	1	1	0	1	0	0	2	2
	Sub-total	0	0	1	0	1	0	1	2	1	2	0	2	1	0	5	6
T. nigromaculata	Female	0	0	0	1	1	2	2	2	0	0	1	0	0	0	4	5
	Male	0	0	0	0	0	0	2	3	1	0	0	0	0	0	3	3
	Sub-total	0	0	0	1	1	2	4	5	1	0	1	0	0	0	7	8
R. prolixus	Male	0	0	0	0	1	1	0	0	0	0	0	0	0	0	1	1
	Sub-total	0	0	0	0	1	1	0	0	0	0	0	0	0	0	1	1
Total number of triatomines		34	40	152	242	156	307	210	769	42	313	57	214	43	222	694	2107

ISSN: 1756-3305