Enterobacteriaceae Flashcards
TSI yellow/yellow
glucose and lactose fermented
TSI red/yellow
glucose fermented lactose not
TSI red/black
glucose fermented lactose not H2S production
TSI red/red
no carbohydrate fermented
O somatic antigen
cell wall antigen
heat stable
K envelope antigen
capsule antigen
heat labile
H flagellar antigen
flagella antigen
heat labile
Enterotoxigenic E coli (ETEC)
produces enterotoxin - Travelers diarrhea
Enteroinvasive E coli (EIEC)
invade cells of the colon
Enteroaggregative E coli (EAEC)
aggregative adherence to epithelial cells - diarrhea in children in developing and developed countries
Enteropathogenic E coli (EPEC)
localized adherence to epithelial cells - important cause of diarrhea in developing countries
Shigella dysenteriae
serogroup A
Shigella flexneri
serogroup B
Shigella boydii
serogroup C
Shigella sonnei
serogroup D
ESKAPE
Enterococcus faccium Staph aureus Kleb pneumo Acinetobacter baumanii Pseudomonas aeruginosa Enterobacter cloacae
ESKAPE function
nosocomial pathogens that are often multi drug resistance and have increased virulence
Yersinia pestis
causative agent of plague
fried egg colony
agent of bioterrorism
Bubonic plague
most common in US
swelling of lymph nodes close to portal of entry with hematogenous spread of bacteria to other organs and tissues causing intravascular coagulation and endotoxic shock if left untreated (75%)
Pneumonic plague
usually secondary but may also result from direct exposure to respiratory secretions from another pneumonic patient or infected cats
fever, cough followed by intravascular coagulation and endotoxic shock if left untreated (90%)
Septicemic plague
direct infection of the bloodstream by flea bite or spread from lymph nodes
high fever, seizures followed by intravascular coagulation, endotoxic shock and death
black hemorrhagic splotches develop - Black Death
Yersinia enterolitica
CIN agar forms bullseye appearance
Non lactose fermenters
proteus/morganella edwardsiella providencia salmonella shigella erwinia yersinia
H2S (+)
salmonella
proteus
edwardsiella
citrobacter
Motility (-)
klebsiella
yersinia
shigella
Urea (+)
Vparahaemolyticus
proteus/providencia/morganella
citrobacter
yersinia
Citrate (+)
proteus/providencia enterobacter citrobacter klebsiella salmonella serratia
E coli ID
Indole (+) Methyl red (+) Lysine (+)
Edwardsiella ID
Indole (+)
Methyl red (+)
Lysine (+)
Ornithine (+)
Morganella ID
Indole (+)
Methyl red (+)
Ornithine (+)
PDA(PEA) (+)
Proteus vulgaris ID
Indole (+) Methyl red (+) PDA(PEA) (+)
Proteus mirabilis ID
Ornithine (+)
PDA(PEA) (+)
Providencia ID
Indole (+)
Methyl red (+)
Citrate (+)
PDA(PEA) (+)
Citrobacter koserii ID
Indole (+)
Methyl red (+)
Citrate (+)
Ornithine (+)
Citrobacter freundii ID
Methyl red (+)
Citrate (+)
Arginine (+)
Klebsiella oxytoca ID
Indole (+)
VP (+)
Citrate (+)
Lysine (+)
Klebsiella pneumoniae ID
VP (+)
Citrate (+)
Lysine (+)
Enterobacter aerogenes ID
VP (+)
Citrate (+)
Lysine (+)
Ornithine (+)
Enterobacter cloacae ID
VP (+)
Citrate (+)
Arginine (+)
Ornithine (+)
Serratia marscescens ID
VP (+)
Citrate (+)
Lysine (+)
Ornithine (+)
Salmonella ID
Methyl red (+)
Citrate (+)
Lysine (+)
Ornithine (+)
Shigella ID
Methyl red (+)
Yersinia ID
Methyl red (+) Ornithine (+)*
