Fusobacterium necrophorum

(redirected from necrosis bacillus)

Fu·so·bac·te·ri·um nec·ro'·pho·rum

Sphaerophorus necrophorus; an unusually pleomorphic species causing or associated with several necrotic conditions in animals, such as calf diphtheria, labial necrosis of rabbits; necrotic rhinitis of pigs; foot rot of cattle, sheep, and goats; and occasionally necrotic lesions in humans.
Synonym(s): necrosis bacillus

Fusobacterium necrophorum

A species that causes sore throat, and sometimes, life-threatening infections such as septic thrombophlebitis of the jugular veins (Lemierre's syndrome) in humans.
See also: Fusobacterium


a genus of anaerobic non-spore-forming, gram-negative bacteria found as normal flora in the mouth and large bowel, and often in necrotic tissue, probably as secondary invaders.

Fusobacterium equinum
contributes to necrotizing pneumonia and pleurisy in horses.
Fusobacterium necrophorum
found in abscesses of the liver, lungs and other tissues and in chronic ulcer of the colon. A common major participant in bovine footrot, calf diphtheria, ruminal necrobacillosis, hepatic abscesses and thrush in horses. Synergistic with Dichelobacter nodosus in ovine footrot. Divided into subspecies necrophorum, formerly biotype A, which is especially found in liver abscesses of cattle, and subspecies funduliforme, formerly biotype B, which is particularly found in ruminal abscesses and in ruminal contents.
Fusobacterium nodosus
Fusobacterium nucleatum
isolated from cat and dog bite wounds.
Fusobacterium russii
isolated from cat and dog bite wounds.