Control of swine dysentery at national level in Sweden.

Eradication of dysentery contributed to substantial welfare and financial improvements in affected herds. Dysentery was controlled successfully at national level through the united efforts from competing stake holders, such as different abattoirs and animal health organisations. However, as Brachyspira hyodysenteriae was assumed to be ubiquitous, although at a low level in healthy pigs, the duration of the successful control of dysentery was concluded to only be transient. Without permanent monitoring for Brachyspira hyodysenteriae, the knowledge of the national status will rapidly decline to the level prior to the initiation of the control program.