Table 4.
insecticide susceptibility, expressed as KDT50, KDT95, and 24 hour mortality, of Anopheles gambiae s.l. collected from Bandundu City before and after ITN distribution in December 2015
| Period | Insecticide | N | KDT50 (minutes) | KDT95 (minutes) | Mortality % (24h) | Conclusion |
|---|---|---|---|---|---|---|
| Before ITN distribution (September-November 2015) | Deltamethrin | 100 | 42.6 (40.7-44.8) | n/a | 52 | Resistant |
| Deltamethrin+PBO | 100 | 22.7 (21.5-23.7) | 39.7 (37.0-43.3) | 98 | Susceptible (Full involvement of P450 oxidase mechanisms) | |
| Permethrin | 100 | n/a | n/a | 31 | Resistant | |
| Permethrin+PBO | 100 | 66.6 (61.7-74.2) | n/a | 84 | Resistant (Partial involvement of P450 oxidase mechanisms) | |
| Bendiocarb | 100 | 27.7 (25.5-29.8) | 43.2 (39.1-50.3) | 100 | Susceptible | |
| DDT | 100 | n/a | n/a | 4 | Resistant | |
| After ITN distribution (May-August 2016) | Deltamethrin | 100 | 31.5 (30.4-32.5) | 51.7 (49.2-54.9) | 34 | Resistant |
| Deltamethrin+PBO | 100 | 30.9 (29.5-32.3) | 52.1 (48.6-56.8) | 99 | Susceptible (Full involvement of P450 oxidase mechanisms) | |
| Permethrin | 100 | n/a | n/a | 36 | Resistant | |
| Permethrin+PBO | 100 | 67.9 (61.9-77.2) | n/a | 97 | Probably resistant (Partial involvement of P450 oxidase mechanisms) | |
| Bendiocarb | 100 | 18.6 (17.3-19.8) | 31.5 (28.9-35.4) | 100 | Susceptible | |
| DDT | 100 | n/a | n/a | 16 | Resistant |