Table 1.
Resistance ratio (RR50) of mosquito populations (An. gambiae) to deltamethrin, malathion, bendiocarb, and DDT. CI50: confidence interval at 50%; KdT50: knockdowntime of 50% of the population; KdT50 of the wild strain divided by KdT50 of the Kisumu reference strain; RR50: resistance ratio at 50%; /: cannot be determined (no knockdown).
| Insecticides by localities | Kdt 50 (CI 50 ) kisimu (min) | Kdt 50 (CI 50 ) wild strain (min) | RR 50 |
|---|---|---|---|
| Azaguié | |||
| Deltamethrin (0.05%) | 31.9 (25.8–38.5) | 114.3 (90.3–191.1) | 3.6 |
| Malathion (5%) | 29.6 (28.4–30.9) | 51,3 (48.7–54.6) | 1.7 |
| Bendiocarb (0.1%) | 31.6 (30.5–32.6) | 79,5 (72.5–93.3) | 2.5 |
| DDT (4%) | 22.3 (21.7–22.9) | / | / |
| Tiébissou | |||
| Deltamethrin (0.05%) | 31.9 (25.8–38.5) | / | / |
| Malathion (5%) | 31.6 (30.5–32.6) | 46.0 (45.0–47.1) | 1.5 |
| Bendiocarb (0.1%) | 18.7 (18.1–19.3) | 56.5 (54.3–59.2) | 3 |
| DDT (4%) | 22.3 (21.7–22.9) | / | / |
| Abengourou | |||
| Deltamethrin (0.05%) | 21.7 (20.7–22.6) | 80.2 (72.9–92.2) | 3.7 |
| Malathion (5%) | 31.4 (29.9–32.9) | 33.7 (32.9–34.4) | 1.1 |
| Bendiocarb (0.1%) | 28.2 (26.9–29.5) | 37.6 (33.7–45.2) | 2.9 |
| DDT (4%) | 22.3 (21.7–22.9) | / | / |
| Agboville | |||
| Deltamethrin (0.05%) | 21.7 (20.7–22.6) | 99.32 (85.5–122.8) | 4.6 |
| Malathion (5%) | 28.2 (26.9–29.5) | 61.9 (57.8–67.8) | 2 |
| Bendiocarb (0.1%) | 28.2 (26.9–29.5) | 419.3 (224.7–1492.3) | 14.9 |
| DDT (4%) | 22.3 (21.7–22.9) | / | / |
| San-Pédro | |||
| Deltamethrin (0.05%) | 21.7 (20.7–22.6) | 83.45 (75.1–97.8) | 3.9 |
| Malathion (5%) | 31.6 (30.5–32.6) | 33.68 (32.9–34.,4) | 1.1 |
| Bendiocarb (5%) | 25.5 (23.1–27.7) | 37.6 (33.7–45.1) | 1.5 |
| DDT (4%) | 22.3 (21.7–22.9) | / | / |
| Yamoussoukro | |||
| Deltamthrin (0.05%) | 31.9 (25.8–38.5) | 111.9 (88.6–160.3) | 3.5 |
| Malathion (5%) | 31.6 (30.5–32.6) | 72.4 (67.9–78.0) | 2.3 |
| Bendiocarb (0.1%) | 18.7 (18.1–19.3) | 64.6 (61.4–68.7) | 3.5 |
| DDT (4%) | 22.3 (21.7–22.9) | / | / |
| Dabou | |||
| Deltamethrin (0.05%) | 31.9 (25.8–38.5) | 111.9 (88.6–160.3) | 3.5 |
| Malathion (5%) | 31.6 (30.5–32.6) | 66 (62.2–71.0) | 2.1 |
| Bendiocarb (0.1%) | 18.7 (18.1–19.3) | 72.4 (65.6–82.4) | 3.9 |
| DDT (4%) | 22.3 (21.7–22.9) | / | / |
| MBé | |||
| Deltamethrin (0.05%) | 29.7 (29.8–30.5) | / | / |
| Malathion (5%) | 31.6 (30.5–32.6) | 72.9 (68.8–79.1) | 2.3 |
| Bendiocarb (0.1%) | 18.7 (18.1–19.3) | 70.3 (66.7–75.6) | 3.8 |
| DDT (4%) | 22.3 (21.7–22.9) | / | / |
| Tiassalé | |||
| Deltamethrin (0.05%) | 21.7 (20.7–22.6) | 220.4 (151.6–431.7) | 10.2 |
| Malathion (5%) | 31.4 (29.9–32.9) | 63.4 (60.5–66.9) | 2 |
| Bendiocarb (0.1%) | 28.2 (26.9–29.5) | 123.5 (94.8–227.4) | 4.4 |
| DDT (4%) | 22.3 (21.7–22.9) | / | / |
| Toumodi | |||
| Deltamethrin (0.05%) | 31.9 (25.8–38.5) | 299.2 (155.6–2521.4) | 9.4 |
| Malathion (5%) | 31.6 (30.5–32.6) | 55.4 (54.1–67.0) | 1.8 |
| Bendiocarb (0.1%) | 18.7 (18.1–19.3) | 50.7 (48.8–62.9) | 2.7 |
| DDT (4%) | 22.3 (21.7–22.9) | / | / |