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Provinces where the farms included in the study were located (red): Belluno (BL), Bergamo (BG), Biella (BI), Brescia (BS), Cremona (CR), Cuneo (CN), Forlì (FO), Lodi (LO), Mantova (MN),Milano (MI), Novara (NO), Parma (PR), Pavia (PV), Piacenza (PC), Pordenone (PN), Rovigo (RO), Treviso (TV), and Verona (VR).The list of PPV species found in each province is reported in Table S1. The map was drawn using QGIS 3.28.11 Firenze LTR.
