Table 4.

Household distribution of Trypanosoma cruzi lineages in humans, domestic dogs, cats and Triatoma infestans during 2000–2007, Santiago del Estero, Argentina.

		Triatoma infestans		Dogs
Area	House	T. cruzi lineage	N° infected / N° examined	T. cruzi lineage	N° infected / N° examined
Under sustained surveillance	1ab	TC IIe (9)c	11/41	TC IIe (1)	1/10
	2a	TC IIe (1)	5/12	TC IIe (2)	2/4
	3a	TC IIe (3)	13/77	TC IIe (3)	7/9
	4		0/43	TC IIe (1)	2/5
	5		0/1	TC IIe (1)	1/4
	6		0/1	TC I + TC IIe (1)	2/8
	7		0/1	TC IIc (1)	2/5
	8	TC I (1)	1/37		0/7
	9	TC I (1)	2/60		0/6
	10		-	TC IIe (1)	1/3
	11	TC IIb/e (1)	1/24	ni	1/7
Under pulsed control actions	12ad	TC IIe (4)	4/13	TC IIe (3)	3/5
	13ae	TC IIb/e (1)	2/44	TC IIe (2)	2/4
	14ae	TC I+TC IIb/e (1), TC IIe (4)	12/30	TC IIe (3)	3/3
	15a	TC IIe (10)	12/19	TC IIe (1)	2/4
	16a	TC IIe (1)	1/3	TC IIb/e (1)	1/4
	17a	TC I (1), TC IIe (1)	3/43	TC IIe (1)	2/3
	18a	TC IId (1)	2/5	TC IIe (2)	2/3
	19a	TC IIe (4)	6/48	TC IIc (1)	3/4
	20b		2/15	TC IIc (1)	1/3
	21		0/5	TC IIe (1)	1/3
	22		ne	TC I (1)	1/2
	23		-	TC IIe (1)	1/1
	24	TC IIe (1)	1/16	ni	1/2
	25		0/1	TC IIe (1)	1/3
	26	TC IIb/e (1)	2/6		0/1
	27	TC IIc (1)	1/3		0/3
	28	TC II (1)	1/6		0/2
	29	TC IIe (1)	3/5		nd
	30	TC IIe (1)	1/5		nd
	31	TC IIe (2)	2/33		nd
	32	TC IIe (1)	1/32		nd

^aMark the 11 houses referred to in text

^bTC IId was identified from one seropositve resident of the house.

^cTC IIe was identified in three dispersing bugs caught by light-trapping in the peridomicile as well as in six domestic bugs.

^dTC IIe was identified from the two cats infected from this house.

^eTC IIe was identified from the only cat infected from this house.

Numbers in brackets are individuals infected with each named lineage. nd = not examined for infection; ne = house not inspected for infestation; ni = not isolated (isolation from an infected or seropositive animal could not be achieved)..