Table 5.
Entomological indices of Aedes vectors according to the study areas: all study areas (A), Muang district—commercial city (B), and Khanu Woralaksaburi district—rural area (C).
| Study Year | House Inspected (n) | House with Aedes Larvae (n) | Container Inspected (n) | Container with Aedes Larvae (n) | Container per House (n) | Larval Indices | |||
|---|---|---|---|---|---|---|---|---|---|
| HI (95% CI) | CI (95% CI) | BI | |||||||
| A | All study areas | ||||||||
| 2016 | 108 | 89 | 1835 | 305 | 17 | 82.4 (74.4–88.7) | 16.6 (15.0–18.4) | 282.4 | |
| 2017 | 107 | 97 | 1922 | 505 | 18 | 90.7 (84.1–95.1) | 26.3 (24.3–28.3) | 472.0 | |
| 2018 | 136 | 124 | 2769 | 626 | 20 | 91.2 (85.5–95.1) | 22.6 (21.1–24.2) | 460.3 | |
| 2019 | 167 | 132 | 2798 | 430 | 17 | 79.0 (72.4–84.7) | 15.4 (14.1–16.7) | 257.5 | |
| 2020 | 214 | 188 | 3904 | 784 | 18 | 87.9 (83.0–91.7) | 20.1 (18.8–21.4) | 366.4 | |
| Total | 732 | 630 | 13,228 | 2650 | 18 | 86.1 (83.4–88.4) | 20.0 (19.4–20.7) | 362.0 | |
| B | Muang district (commercial city) | ||||||||
| 2016 | 85 | 68 | 1449 | 234 | 17 | 80.0 (70.6–87.4) | 16.1 (16.1–18.1) | 275.3 | |
| 2017 | 73 | 66 | 1371 | 366 | 19 | 90.4 (82.1–95.6) | 26.7 (24.4–29.1) | 501.4 | |
| 2018 | 79 | 71 | 1650 | 419 | 21 | 89.9 (81.8–95.1) | 25.4 (23.3–27.5 | 530.4 | |
| 2019 | 94 | 77 | 1717 | 290 | 18 | 81.9 (73.2–88.7) | 16.9 (15.2–18.7) | 308.5 | |
| 2020 | 164 | 141 | 3136 | 609 | 19 | 86.0 (80.0–90.6) | 19.4 (18.1–20.8) | 371.3 | |
| Total | 495 | 423 | 9323 | 1918 | 19 | 85.5 (82.1–88.4) | 20.6 (19.8–21.4) | 387.5 | |
| C | Khanu Woralaksaburi district (rural area) | ||||||||
| 2016 | 23 | 21 | 386 | 71 | 17 | 91.3 (74.9–98.1) | 18.4 (14.8–22.5) | 308.7 | |
| 2017 | 34 | 31 | 551 | 139 | 16 | 91.2 (78.3–97.5) | 25.2 (21.7–19.0) | 408.8 | |
| 2018 | 57 | 53 | 1119 | 207 | 20 | 93.0 (84.2–97.6) | 18.5 (16.3–20.9) | 363.2 | |
| 2019 | 73 | 55 | 1081 | 140 | 15 | 75.3 (64.6–84.1) | 13.0 (11.0–15.1) | 191.8 | |
| 2020 | 50 | 47 | 768 | 175 | 15 | 94.0 (84.8–98.3) | 22.8 (19.9–25.9) | 350.0 | |
| Total | 237 | 207 | 3905 | 732 | 16 | 87.3 (82.7–91.1) | 18.7 (17.5–20.0) | 308.9 | |
HI: House index; CI: Container index; BI: Breteau index; 95% CI: 95% confidence interval.