Fig. 1

Relationships between (a) the perception of the future (y-axis) and current (x-axis) risk of sporadic cases, and (b) of epidemics for dengue (DEN), chikungunya (CHIK) and Zika (ZIKA) at the department scale (similar results were obtained at the national scale). a shows a high dispersion of y-axis responses for x-axis values lower than 4, and a tendency towards more homogeneous y-axis responses (low to medium-low scores) with increasing x-values (see text for further details). The dotted line indicates identical risk perception values for today and the future (x = y). The blue line corresponds to the locally-weighted non-parametric curve that gives the main trend