Improved detection of house infestations with triatomines using sticky traps: a paired-comparison trial in the Argentine Chaco

Table 1 Infestation with Triatoma infestans and sensitivity of sticky traps (ST), householdersʼ bug notifications (HN), timed-manual collections (TMC) and ST combined with HN

Level	Detection method	Percentage of infestation (No. positive/No. evaluated)	Sensitivity (%) according to houses or sites positive by
Level			ST or TMC (No. positive)^c	ST, TMC or HN (No. positive)^d
House^a
	ST	39 (21/54)	78 (21/27)	68 (19/28)
	HN^b	35 (17/49)	54 (13/24)	61 (17/28)
	TMC	35 (19/54)	70 (19/27)	61 (17/28)
	ST-HN	50 (27/54)	88 (21/24)	89 (25/28)
	All methods combined	57 (31/54)	100 (27/27)	100 (28/28)
Domiciles
	ST	22 (11/51)	79 (11/14)	61 (11/18)
	HN^b	32 (15/47)	77 (10/13)	83 (15/18)
	TMC	16 (8/51)	57 (8/14)	39 (7/18)
	ST-HN	33 (17/51)	92 (12/13)	94 (17/18)
	All methods combined	37 (19/51)	100 (14/14)	100 (18/18)
Kitchens and storerooms
	ST	21 (11/52)	65 (11/17)	64 (9/14)
	HN^b	6 (3/47)	21 (3/14)	21 (3/14)
	TMC	27 (14/52)	82 (14/17)	86 (12/14)
	ST-HN	21 (11/52)	64 (9/14)	64 (9/14)
	All methods combined	33 (17/52)	100 (17/17)	100 (14/14)

^aHouse level only encompasses domiciles, storerooms and kitchens
^bHouseholders provided no information on triatomine presence in five houses (including four domiciles and five kitchens and storerooms)
^cUsing Definition 1, the denominator only included houses (or sites) classified as infested because of the finding of at least one live triatomine as determined by ST or TMC
^dUsing Definition 2, the denominator included the total number of houses (or sites) that were positive as determined by at least one of the three methods used (ST, TMC and HN)

ISSN: 1756-3305