Table 4 Knockdown times (KDT50 and KDT95) and KDT50 ratios (KDT50R), following exposure to 0.05% deltamethrin of Anopheles rufipes (s.l.) populations from study locations of North Cameroon from 2012 to 2015
Year | Health district | Location | n | KDT50 (95%CI) (min) | KDT95 (95%CI) (min) | KDT50 ratio | Status |
|---|---|---|---|---|---|---|---|
2012 | Garoua | NAS | 48 | 17.5 (15.4–19.4) | 42.0 (36.5–51.0) | 1.84 | S |
2013 | Garoua | Kanadi | 22 | 22.6 (20.3–25.0) | 37.2 (34.2–46.5) | 2.38 | R |
Lounderou | 28 | 21.6 (19.1–24.0) | 40.2 (34.9–47.9) | 2.27 | S | ||
Mboum Aviation | 26 | 35.2 (31.7–38.6) | 70.2 (60.6–87.9) | 3.71 | R | ||
Nassarao | 12 | 24.6 (21.2–28.2) | 39.8 (33.6–54.7) | 2.59 | SR | ||
Mayo Oulo | Batoum | 80 | 21.3 (19.3–23.2) | 54.5 (48.3–63.7) | 2.24 | SR | |
Bossoum | 32 | 21.5 (18.2–24.5) | 53.0 (44.5–69.1) | 2.26 | S | ||
Boyoum | 87 | 25.0 (23.4–26.6) | 55.9 (50.6–63.4) | 2.63 | SR | ||
Maboni | 51 | 32.4 (29.7–35.5) | 80.2 (68.2–100.4) | 3.41 | R | ||
2014 | Garoua | Bocki | 62 | 21.9 (20.1–23.7) | 48.3 (43.0–56.2) | 2.31 | SR |
Mayo Oulo | Batoum | 107 | 9.9 (9.0–10.7) | 27.0 (24.1–30.9) | 1.04 | S | |
Bossoum | 43 | 18.0 (15.2–20.5) | 39.4 (34.0–48.7) | 1.90 | S | ||
Matra | 90 | 21.2 (19.8–22.7) | 51.3 (46.2–58.4) | 2.23 | SR | ||
Pitoa | Banaye | 20 | 13.9 (8.3–18.1) | 39.7 (31.2–61.0) | 1.46 | SR | |
Kirambo | 26 | 10.5 (4.6–15.7) | 41.5 (30.8–63.2) | 1.11 | S | ||
Nassarao-Be | 13 | 5.4 (0.8–10.9) | 46.1 (25.5–174.8) | 0.57 | S | ||
2015 | Mayo Oulo | Batoum | 21 | 27.5 (24.1–31.2) | 60.1 (49.9–80.5) | 2.90 | SR |
Bossoum | 67 | 23.7 (22.1–25.4) | 49.1 (44.3–56.1) | 2.50 | SR | ||
Boyoum | 89 | 28.0 (26.2–29.8) | 65.1 (58.4–74.5) | 2.95 | SR | ||
Doumo | 97 | 26.6 (21.4–23.8) | 45.4 (41.7–50.3) | 2.80 | R | ||
Dourbeye | 71 | 30.7 (28.3–33.0) | 68.7 (60.8–80.8) | 3.23 | SR |