Erysipelothrix spp Flashcards
what is the main Erysipelothrix spp. to be concerned about
E. rhusiopathiae
what type of bacteria is E. rhusiopathiae
gram +
non-spore forming
alpha hemolysis
rod
True or False:
E. rhusiopathiae is pathogenic
true
what is a E. rhusiopathiae infection called in swine
erysipelas
where does an erysipelas infection occur
superficial layer of the skin
how is erysipelas characterized
raised, well-defined, red rash on the skin
what is the primary reservoir of E. rhusiopathiae
swine
how can one come in contact with E. rhusiopathiae
sewage or ground contaminated with feces
where is it common to E. rhusiopathiae
fish skin
True or False:
E. rhusiopathiae survives for a long time in the environment
FALSE
this bacteria wants to be within a host
what is the mode of infection for erysipelas
ingestion
scratches and wounds
what are the virulence factors of erysipelas
capsule - acidic polysaccharide
surface proteins
hyaluronidase
neuraminidase
type III hypersensitivity = arthristis
what age group of pigs are most susceptible
3 month to 3 yrs.
what is the most common / easiest way for pigs to become infected
orally
(fish meal, contaminated feed/ water)
bug bites
what are the forms erysipelas can take in pigs
septicemic
skin
chronic
what type of infection is the septicemic type of erysipelas
acute in young pigs
what are the clinical signs of septicemic erysipelas
fever
red/purple skin patches
death (if left untreated)
what are the clinical signs of the skin form of erysipelas
diamond shaped red, raised area
necrosis of skin
scabs
what are the clinical signs of the chronic form of erysipelas
arthritis
endocarditis
when do skin lesions of erysipelas appear
2-3 days and disappear 4 - 7 days
explain the intensity of the lesions caused by erysipelas and their prognosis
light pink - purple = recover
dark purple to red = death
how does erysipelas present in sheep and cattle
polyarthritis symptoms
how does erysipelas present in turkeys
more often in males
skin injuries
hemorrhagic lesions
how are turkeys infected with erysipelas treated
penicillin IM injection
flock vaccination
what is the prognosis of erysipelas in swine
time sensitive treatment needed
- penicillin within 24- 36 hours of infection = good recovery