Figure 3

Bed nets A Monthly number of distributed bed nets(black line) and number Re-impregnated bed nets (green line) B Probability density of the percentage of people locally covered with bed nets between 1988 and 1997, bandwidth of 0.027 C Percent (%) of population covered by bed nets for the lower and upper time limit for the breakpoints, the green-blue line corresponds to January 1992 (Plasmodium falciparum and P. vivax), the green line to September 1992 (P. falciparum) and the blue line to December 1992 (P. vivax).