Fig. 6From: Spatial analysis and temporal trends of porcine reproductive and respiratory syndrome in Denmark from 2007 to 2010 based on laboratory submission dataSignificant spatial clusters for PRRSV in Denmark. The figure represents significant clusters (p-value <0.05) of PRRSV type 1 and type 2 seropositive swine herds in Denmark biannually between 2007 and 2010 for a maximum spatial window size of 25 % of the population at risk. The orange and blue clusters represent the first and second 6-month period in each year, respectivelyBack to article page