Fig. 6

Kernel density of infected dogs overlapping with solid-waste deposits, forest fragments and water drainage areas. This map represents overlapping of CVL serological titres (kernel density), image classification of the forest fragments (red spots), drainage systems formed by streams and rivers in the city (blue linear features) and irregular deposits of solid waste (blue dots) in the urban area of Presidente Prudente, São Paulo state, Brazil. Circles (A, B and C) represent clusters with the co-presence of seropositive dogs, forest fragments, active drainage system and irregular deposits of solid waste. A buffer of 1200 m radius was used as a simulation of the sand fly flight range (Gaussian function and smooth kernel of 1200 m radius)