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E. rhusiopathiae general characteristics
Gram + rods in short chains
Small, transparent, glistening colonies
Source: swines (most common), fish
Pleomorphic
E. rhusiopathiae BCM Tests
Catalase +
Oxidase +
Indole +
H2S +
E. rhusiopathiae culture
BAP: Alpha hemolytic, small transparent glistening colonies
TSI: H2S +, black butt
E. rhusiopathiae clinical manifestations
Erysipeloid
by cut or abrasion - direct inoculation; seal/whale finger
commonly affects butchers, fishermen
E. rhusiopathiae is resistant to
Processing
Smoking
Pickling
E. rhusiopathiae Treatment and Prevention
Tx: Penicillin
Prev: protection against direct contact; vax for animals