Table 3.
Distribution of house infestation with T. infestans by timed-manual searches according to the house risk indexa, type of environment and survey, Avia Terai, Chaco, 2015–2019
| Years post-spraying | Environment | % of infested dwellings (no. inspected) | |||
|---|---|---|---|---|---|
| Low-risk | High-risk | No risk data | Total | ||
| 0 | Urban | 0.0 (142) | 17.4 (270) | – (0) | 11.4 (412) |
| Peri-urban | 0.0 (61) | 38.3 (149) | – (0) | 27.1 (210) | |
| Rural | 0.0 (23) | 46.2 (253) | – (0) | 42.4 (276) | |
| 1 | Urban | 0.0 (314) | 4.0 (498) | 0.0 (118) | 2.2 (930) |
| Peri-urban | 0.0 (66) | 22.5 (209) | 0.0 (2) | 17.0 (277) | |
| Rural | – (0) | 21.7 (272) | – (0) | 21.7 (272) | |
| 2 | Peri-urban | 0.0 (59) | 9.5 (190) | 0.0 (44) | 6.1 (293) |
| Rural | – (0) | 12.8 (47) | – (0) | 23.5 (51) | |
| 4 | Rural | – (0) | 15.2 (244) | – (0) | 18.4 (245) |
Baseline: October 2015–March 2016
aHouse risk index: based on householders’ reports of triatomine presence or the existence of peridomestic structures housing domestic animals