Citrobacter Flashcards
important species
citrobacter freundii
citrobacter koseri
citrobacter diversus
gram
shape
motility?
lactose fermenter?
TSI
urease
oxidase
catalase
citrate
antigenic structures
gram negative
rod
motile by peritrichous flagella (H antigen)
lactose fermenter (slowly)
H2S on TSI
urease positive
oxidase negative
catalase positive
citrate as sole carbon source
antigenic structures – O, H, K
what does it indicate
fecal contamination
where is it continuously excreted
with feces
humans excrete millions per ay
where is it continuously excreted
with feces
humans excrete millions per day
habitat
digestive tract
vulva
oral cavity
virulence
little known
adhesins
motility
biofilm
immuno avoidance
toxins
nutrient and iron acquisition
T3SS
hosts
humans – zoonotic
animals
aquatic species – catfish, turtles, rainbow trout
reptiles
what species is it more dangerous for
fish and reptiles
opportunistic?
yes, rare opportunistic nosocomial bacteria
what can it rarely cause in humans
bullae – attack skin
reptile sideases
septicemic cutaneous ulcerative disease in turtles
subcutaneous abscesses
petechiae
anorexia
lethargy
liver necrosis
fish diseases
ulcer disease
