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''B. hyodysenteriae'' survives several weeks in moist faeces. Carrier pigs shed ''B. hyodysenteriae'' for up to 3 months, acting as a source of infection for healthy pigs.
''B. hyodysenteriae'' survives several weeks in moist faeces. Carrier pigs shed ''B. hyodysenteriae'' for up to 3 months, acting as a source of infection for healthy pigs.
[[Spirochaetes]] can be differentiated by their pattern of haemolysis on blood agar as well as molecular techniques.