Unit 1- Erysipelothrix Flashcards
Erysipelothrix rhusiopathiae
Gram positive long rod, facultative anaerobe, catalase negative, oxidase negative, non motile, non-spore forming
Clinical Serotypes
1a, 1b, 2
Culture Media
Blood agar, heart infusion and crystal violet, nutrient broth, triple sugar iron
Triple Iron Sugar Agar
Produces H2S causing fart smell
Habitat
Tonsils, lymphoid tissue in GI, sewage
Common host
Pig, turkey, human
Human infection
Causes hard purple finger swelling
Entry Routes
Oral
Exit Routes
Fecal
Surface Structure
Capsule, surface proteins for biofilm formation
Enzymes
Neuraminidase, hyaluronidase, and superoxide dismutase
Neuraminidase
For attachment, invasion, and destruction of blood vessels causing hemorrhage, thrombosis, and emboli
Diamond Skin Disease
Causes rhomboid urticarial skin lesion sin pig
Turkey erysipelas
Causes swollen snood
Cardiovascular Form
Dark discoloration of belly and extremities due to endocarditis