Figure 1

Demarcated areas in October 2020 in the Puglia region, southern Italy. The red outlined region is the whole infected zone. Within the infected zone, the yellow region is the containment zone, where all infected plants must be removed, and all host plants within a 100 m radius of the infected plants are tested. The blue region is the buffer zone, where every infected plant found should be removed, as well as all host plants within a 100 m radius of the infected plant. The red dots in the blue region are newly found infected plants in the buffer zone for which the demarcated zones have not been updated yet. The green dot is the town of Gallipoli, the presumed origin of the outbreak of X. fastidiosa in Puglia. The red dots are the towns of Maglie, Otranto, and Santa Maria di Leuca. These locations are used as alternative origins of the outbreak in sensitivity analyses on the point of origin. The image was obtained from https://www.emergenzaxylella.it.