Fig. 2

The effect of eave tubes on transmission potential of the vector population relative to no intervention (relative transmission potential, RTP). The different lines indicate different human host categories, with the lowest line (blue, least RTP) being the population protected by eave tubes, the uppermost line (red, greatest RTP) the population without any protection, and the middle line (purple) an overall RTP of the entire human host population. All plots use the same model assumptions: no other existing interventions, no mosquitoes are assumed killed on exit from an eave tube house, and 20 % deflection (without kill) by eaves tubes. Of those not deflected, mortality is estimated based on experimental data that used deltamethrin-treated eave tubes and showed either 70 % (a) of An. gambiae, or 52 % (b) of An. arabiensis were killed by the eave tubes (Snetselaar et al. in prep). Plots for eave tube-protected humans begin at 10 % coverage, as this is an empty category with 0 % eave tube coverage