Systematic Veterinary Bacteriology and Mycology

HABITAT

• The bactrerium is widespread in nature and has been recovered from a wide variety of wild and domestic animals including mammals, fish (both fresh and salt water), birds, reptiles and amphibians.
• It is present in the soil and can survive for 20 days or longer in alkaline soil.
• The major source of infection for swine and turkeys is carrier animals of the same species.
• It is reported that 30-50% of pigs carry the bacterium in their tonsils, other lymphoid tissues.
• It is present in slurry of piglets and can be recovered from the faeces of carrier pigs.