Table 1 Distribution of Trypanosoma cruzi infection in Triatoma infestans by environment and type of ecotope, Avia Terai, Chaco, 2015–2016
Environment and ecotope (no. of houses inspected)a | Bug level | House level | ||||
|---|---|---|---|---|---|---|
% of bugs examined (no. collected) | % of bugs infected (no. examined) | 95% CI | % examined for infection (no. infested) | % harboring infected bugs (no. examined) | 95% CI | |
Urban (416) | ||||||
Domiciles | 85.7 (14) | 0.0 (12) | 0.0–24.3 | 66.7 (3) | 0.0 (2) | 0.0–65.8 |
Peridomestic HR | 100.0 (67) | 0.0 (67) | 0.0–5.4 | 87.5 (8) | 0.0 (7) | 0.0–32.2 |
Peridomestic LR | 7.2 (485) | 0.0 (35) | 0.0–9.9 | 25.6 (39) | 0.0 (10) | 0.0–27.8 |
Total | 20.1 (566) | 0.0 (114) | 0.0–3.2 | 38.0 (50) | 0.0 (19) | 0.0–16.8 |
Peri-urban (210) | ||||||
Domiciles | 98.1 (53) | 17.3 (52) | 9.2–30.0 | 100.0 (14) | 21.4 (14) | 6.8–48.3 |
Peridomestic HR | 24.3 (226) | 5.5 (55) | 1.9–14.9 | 85.7 (14) | 18.2 (12) | 4.0–48.9 |
Peridomestic LR | 4.3 (974) | 0.0 (42) | 0.0–8.4 | 24.3 (37) | 0.0 (9) | 0.0–29.9 |
Total | 11.9 (1253) | 8.1 (149) | 4.7–13.6 | 51.7 (60) | 16.1 (31) | 7.1–32.6 |
Rural (276) | ||||||
Domiciles | 50.9 (228) | 9.5 (116) | 5.2–16.3 | 96.2 (26) | 24.0 (25) | 11.2–43.2 |
Peridomestic HR | 29.6 (358) | 8.5 (106) | 4.4–15.6 | 89.7 (29) | 15.4 (26) | 5.8–35.2 |
Peridomestic LR | 3.8 (2003) | 0.0 (76) | 0.0–4.8 | 26.6 (64) | 0.0 (17) | 0.0–18.4 |
Total | 11.5 (2589) | 6.7 (298) | 4.4–10.1 | 57.3 (103) | 13.6 (59) | 7.0–25.5 |
Total (902) | 12.7 (4408) | 5.7 (561) | 4.1–8.0 | 51.2 (213) | 11.9 (109) | 7.7–20.5 |