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Relative monthly incidence of RHD during 1988-2010 (continuous line), due to RHD virus (RHDV) GI.1, and during 2011–2018 (dotted line), due to RHDV GI.2, based on 253 visits to 156 affected farms. A total of 13,326 visits (calendar month) were made to 1714 farms in Spain.
