Table 2.
Mean daily human biting rate (HBR) during the dry and the rainy season; dry, rainy and annual CSP indices; dry, rainy and annual entomological inoculation rates (EIR) of An. gambiae s.l. by sites in Libreville: data collected from December 2008 to January 2010
| Dry season | Rainy season | All year | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Total collected | HBR | Tested for CSP | CSP rate [95% C.I] | Dry season EIR | Total collected | HBR | Tested for CSP | CSP rate [95% C.I] | Rainy season EIR | Dry CSP/Rainy CSP | Annual CSP | Annual EIR | Annual averaged CSP* | Annual averaged EIR* | |
| Alibandeng | 65 | 2.5 | 65 | 0 [0.0; 5.5] |
0.0 | 1546 | 20.6 | 1526 | 0.26 [0.07;0.67] | 2.5 | NS | 0.25 [0.06;0.64] | 13.3 | - | - |
| Camp des Boys | 109 | 4.3 | 108 | 0.93 [0.02;5.05] | 4.7 | 1127 | 15.8 | 1113 | 0.89 [0.43;1.64] | 34.5 | NS | 0.9 [0.45;1.60] | 39.2 | 1.11 | 48.4 |
| Beauséjour | 35 | 1.5 | 35 | 0 [0.0;10.0] |
0.0 | 240 | 5.3 | 239 | 0.84 [0.10;2.89] | 9.3 | NS | 0.72 [0.08;2.61] | 10.6 | 1.11 | 16.3 |
| Sotega | 260 | 10.8 | 259 | 1.16 [0.23;3.34] | 19.2 | 702 | 19.5 | 701 | 1.57 [0.78;5.1] | 68.7 | NS | 1.45 [0.79;2.43] | 87.9 | 1.11 | 67.3 |
| Akébé-Poteau | - | - | - | - | - | 139 | 9.2 | 139 | 1.43 [0.17;5.1] | 31.9 | - | 1.43 [0.17;5.1] | - | - | - |
| Total | 469 | 4.7 | 467 | 0.85 [0.23;2.17] | 4.5 | 3754 | 15.5 | 3718 | 0.78 [0.52;1.11] | 29.4 | NS | 0.78 [0.54;1.09] | 33.9 | - | - |
*Annual CSP indexes of the four areas studied during the two seasons have been compared using Chi2 test. Only the Annual CSP index of Alibandeng was statistically different of the others. An annual averaged CSP index has been calculated for the three remaining areas.