Figure 2
From: Role of wild ruminants in the epidemiology of bluetongue virus serotypes 1, 4 and 8 in Spain
Map of Andalusia (southern Spain) showing the spatial distribution of BTV serotypes in livestock and wild ruminants, period 2006-2010. The gradient of grey indicates the number of BTV-1 (A), BTV-4 (B) and BTV-8 (C) infected farms by domestic ruminants. Grey dots size is proportional to the number of BTV-1 (D), BTV-4 (E) and BTV-8 (F) seropositive wild ruminants detected and the black triangles indicate the presence of BTV-1 RNA (D) and BTV-4 RNA (E) positive animals. White areas indicate the regions in which wild ruminants were sampled.