Table 1 Malaria vector composition, sporozoite prevalence (S), biting rate (B) and entomological inoculation (EIR) for Anopheles gambiae s.s., Anopheles arabiensis and Anopheles funestus and their overall estimated yearly contribution to malaria transmission from year 2008–2012 in the study area
Species | 2008 | 2009/10 | 2011 | 2012 |
|---|---|---|---|---|
An. gambiae complex sibling species proportion | ||||
An. gambiae s.s. | 0.14 | 0.15 | 0.002 | 0 |
An. arabiensis | 0.86 | 0.85 | 0.998 | 1 |
No. of PCR amplifications | 2,924 | 1,307 | 2,542 | 1,362 |
An. funestus group sibling species proportion | ||||
An. funestus s.s. | - | 0.887 | 0.956 | 1 |
An. rivulorum | - | 0.013 | 0.021 | 0 |
An. leesoni | - | 0 | 0.023 | 0 |
An. parensis | - | 0 | 0.001 | 0 |
No. of PCR amplifications | - | 330 | 880 | 1,527 |
Sporozoite prevalence (S;%) | ||||
An. gambiae s.s. | 1.18 | 0.04 | 0 | 0 |
An. arabiensis | 0.16 | 0.36 | 0.07 | 1.47 |
An. funestus | 1.71 | 0 | 0.43 | 2.20 |
Biting rate (B; b/p/n) | ||||
An. gambiae s.s. | 8.52 | 6.05 | 0.04 | 0 |
An. arabiensis | 52.37 | 35.51 | 59.74 | 20.70 |
An. funestus | 1.74 | 12.84 | 10.09 | 14.31 |
Entomological Inoculation Rate (EIR; ib/p/y) | ||||
An. gambiae s.s. | 36.70 | 1.61 | 0 | 0 |
An. arabiensis | 30.58 | 55.51 | 15.17 | 110.90 |
An. funestus | 10.86 | 0 | 15.58 | 115.10 |
Total | 78.14 | 57.12 | 31.05 | 226.0 |