Reactive Node Diseases
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Parasitic Diseases
bovine parasitic bronchitis
ostertagiasis
fascioliasis
Bacterial Diseases
clostridial
Diseases Involving Both Reactive Nodes and Lymphadenitis
Tuberculosis - Cattle
viz. brucellosis and Johne's disease
- chronicity is caused by persistence of intacellular bacteria in lymph node macrophages
- Type IV hypersensitivity, but does not result in visible necrosis as in TB
Johne's disease
Actinobacillosis
Actinomycosis
Equine strangles
- acute inflammation
- produce pyogenic or necrotic foci in the drainage nodes
- involves submaxillary nodes
Streptococcal adenitis or head gland disease
- dogs
- acute inflammation as in above