Figure 2. Emilia-Romagna map with the stations included in the survey and locations of PCR–positive pools.

Horizontal lines, WNV detections; vertical lines, USUV detections. Diamonds, mosquito abundance monitoring stations; circles, survey stations; triangles, extraordinary stations. Province abbreviations: PC, Piacenza; PR, Parma; RE, Reggio Emilia; MO, Modena; BO, Bologna; RA, Ravenna; FE, Ferrara. (*), the 13 Ferrara city stations were represented with a single circle.