Figure 1
From: Wild boar: an increasing concern for Aujeszky's disease control in pigs?
Sampled areas and Aujeszky's disease virus (ADV) seroprevalences. Map of the Iberian Peninsula showing the six sampled areas for the study (upper panel). Seroprevalences (and associated 95% standard errors) for each area during the three considered seasons (2000-2003, 2004-2007, 2008-2010) are shown in the lower panel. Within each area, significant differences in overall season seroprevalence are marked with an asterisk.