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Sardinian epidemiological context. (A) Total number of farms in Sardinia and (B) the number of domestic pigs bred in domestic pig farms by years, from 2010 to 2020. Data are collected by the Italian National Database and correspond to the annual animal census (30th June). (C) Outbreaks occurred in indoor and outdoor domestic pig farms from 2010 to 2018 over the wild boar density by km2.
