Caseous Lymphadenitis sheep

What pathogen causes Caseous lymphadenitis?

Corynebacterium pseudotuberculosis.

How does Caseous lymphadenitis initially enter the body?

Through skin abrasions, inhalation, or ingestion.

What are some common clinical signs of Caseous lymphadenitis?

Loss of body condition score (BCS), lumps/bumps on face and neck, mastitis, and enlarged scrotal or inguinal lymph nodes.

What is a common method for diagnosing Caseous lymphadenitis?

Swab and culture of draining abscesses and ELISA to detect antibodies in blood.

What is a key prevention strategy for Caseous lymphadenitis?

Only buy animals from trusted sources and increase boundary biosecurity.

What is Caseous Lymphadenitis (CL)?

A chronic infectious disease affecting primarily sheep and goats.

Etiology of CL

Caused by the bacterium Corynebacterium pseudotuberculosis.

Pathogenesis of CL

Formation of abscesses in lymph nodes and internal organs.

Transmission routes of CL

Direct contact, contaminated fomites, and unpasteurized milk.

Clinical signs of CL

Swelling of peripheral lymph nodes (commonly near the head, neck, and shoulder).

Diagnosis of CL

Culture and identification of Corynebacterium pseudotuberculosis from abscess aspirates or tissue samples.

Difficult; options include surgical drainage, local or systemic antibiotics, and vaccines