Table 3 Estimated time (months) for mortality to decrease to 80 and 50% for Anopheles arabiensis , Culex quinquefasciatus TPRI and Muheza strains tested on laboratory sprayed substrates
Substrate | Insecticide | Estimated time to 80% mortality | Estimated time to 50% mortality | ||
|---|---|---|---|---|---|
Time (months) | 95% CI | Time (months) | 95% CI | ||
Anopheles arabiensis dondotha | |||||
Mud | P-methyl EC | 1.0 | (0.7 to 1.8) | 1.9 | (1.2 to 4.2) |
P-methyl CS B | 4.9 | (4.4 to 5.5) | 7.5 | (5.7 to †) | |
P-methyl CS BM | 4.4 | (3.8 to 5.1) | 6.2 | (5.4 to 7.0) | |
Concrete | P-methyl EC | 2.3 | (1.8 to 2.7) | 3.1 | (2.7 to 3.3) |
P-methyl CS B | 6.4 | (6.1 to 6.8) | 7.2 | (6.9 to 7.5) | |
P-methyl CS BM | 5.0 | (4.4 to 5.5) | 6.5 | (6.0 to 7.0) | |
Culex quinquefasciatus TPRI | |||||
Mud | P-methyl EC | 1.8 | (1.4 to 2.2) | 2.1 | (1.7 to 2.5) |
Lambda CS | 2.9 | (2.7 to 3.3) | 3.7 | (3.4 to 4.0) | |
P-methyl CS B | 6.2 | (5.3 to 7.6) | † | † | |
P-methyl CS BM | 7.4 | (6.8 to 8.1) | 9.7 | (8.6 to 11.0) | |
Concrete | P-methyl EC | 0.8 | (0.7 to 0.9) | 1.3 | (1.2 to 1.6) |
Lambda CS | 5.0 | (4.7 to 5.3) | 5.9 | (5.7 to 6.1) | |
P-methyl CS B | 8.2 | (7.5 to 9.3) | 9.7 | (8.9 to 10.7) | |
P-methyl CS BM | 6.8 | (0.6 to 7.2) | 8.6 | (8.1 to 9.1) | |
Culex quinquefasciatus Muheza | |||||
Mud | P-methyl EC | 0.8 | (0.5 to 1.1) | 1.3 | (1.0 to 1.6) |
Lambda CS | † | † | 0.9 | (0.5 to 1.4) | |
P-methyl CS B | 4.0 | (3.5 to 4.6) | 7.1 | (5.5 to 11.0) | |
P-methyl CS BM | 3.8 | (3.3 to 4.3) | 6.4 | (5.7 to 7.3) | |
Concrete | P-methyl EC | 1.0 | (0.8 to 1.2) | 1.4 | (1.0 to 1.7) |
Lambda CS | 1.1 | (0.8 to 1.6) | 1.8 | (1.5 to 2.2) | |
P-methyl CS B | 4.9 | (4.2 to 5.6) | 6.5 | (5.8 to 7.4) | |
P-methyl CS BM | 4.3 | (4.1 to 4.6) | 5.7 | (5.3 to 6.1) | |