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 | |
|---|---|---|---|---|
| ST or TMC (No. positive)c | ST, TMC or HN (No. positive)d | |||
| Housea | ||||
| ST | 39 (21/54) | 78 (21/27) | 68 (19/28) | |
| HNb | 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) | |
| HNb | 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) | |
| HNb | 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)