Figure 1From: Spatial epidemiology of porcine reproductive and respiratory syndrome in ThailandSpatio-temporal distribution of PRRS in Thailand during 2007 to 2010. The epidemic curve shows the temporal distribution of PRRS occurrence in Thailand from 2007 to 2010. The grey lines represent the daily number of positive farms, and the red line represents the weekly average number of positive farms. The maps show the spatial distribution of PRRS in Thailand in 2007, 2008, 2009, January to July 2010, and August to December 2010, respectively.Back to article page