Map of Piedmont and Liguria sites where a CoV or PMV sequence was detected. Circles represent CoV positive sites; squares identify PMV positive sites and diamonds represent the site positive for both CoV and PMV. Sites are identified according to a code formed by the province abbreviation and progressive numbers, i.e. in Piedmont, for Cuneo province CN1: Ormea, CN2: Rodello, CN3: Pianfei, CN4: Santa Vittoria d’Alba, CN5: Garessio CN6: Villar San Costanzo; for Torino province TO7: Verrua Savoia; for Vercelli province VC8: Trino; for Verbano-Cusio-Ossola province VCO9: Baceno; for Alessandria province AL10: Tassarolo, AL11: Vignale Monferrato; in Liguria, for Savona province SV12: Finale Ligure. Sampled municipalities that were found negative are reported in grey.