Caseous lymphadenitis (CL) in Goat and Sheep is a chronic, contagious disease caused by the bacterium Corynebacterium pseudotuberculosis. The disease is characterized by abscess formation in or near major peripheral lymph nodes (external form) or within internal organs and lymph nodes (internal form). Although both the external and internal forms of CL occur in sheep and goats, the external form is more common in goats, and the internal form is more common in sheep. CL is not considered a “curable” disease. Economic losses from CL include death, condemnation and trim of infected carcasses, hide and wool loss, loss of sales for breeding animals, and premature culling of affected animals from the herd or flock. Because of its zoonotic potential, care should be taken when handling infected animals or purulent exudate from active, draining lesions. C.pseudotuberculosis can survive in the environment for several months and is highly infectious. Herd should be monitored by routine testing as the infected animals may not show visible or obvious clinical symptoms.
UBRL Livestock Diagnostics CL test uses an enzyme-linked immunosorbent assay (ELISA) for the detection of IgG antibodies specific for the causative agent of caseous lymphadenitis (CL) in sheep or goat sera.
Merck Vet Manual: https://www.merckvetmanual.com/circulatory-system/lymphadenitis-and-lymphangitis/caseous-lymphadenitis-of-sheep-and-goats Accessed Website 06/20/17.