Enterobacteriaceae Flashcards
H2S (+)
SPACE:
Salmonella
Proteus
Arizonae
Citrobacter freundii
Edwardsiella tarda
How to differentiate PPM?
Proteus:
• Swarming
• H2S +
• P. mirabilis (Indole [-])
• P. vulgaris (Indole [+])
Providencia: Citrate (+)
Morganella: ODC (+)
Differentiate E. coli vs. Edwardsiella
Edwardsiella is:
• H2S + w/ gas
• NLF (K/A)
*E. coli is H2S -; they both have same IMVIC of ++—
Differentiate Y. pestis from enterocolitica
Urease test
• Pestis is -
• Enterocolitica is +; slow
Cauliflower appearance of colonies
• 48 hrs in SBA: Y. pestis
• 4-8 months in LJ: M. tb
Most common cause of death associated w/ bacterial contamination of packed RBCs
Y. enterocolitica
BULL!
* Bull’s eye colonies on CIN: ?
* Bull’s eye rash (erythema chronicum migrans): ?
* Bull’s eye amoeba: ?
* Bull’s neck infection: ?
* Buffalo hump: ?
- Bull’s eye colonies on CIN: Y. enterocolitica
- Bull’s eye rash (erythema chronicum migrans): Borrelia burgderfori
- Bull’s eye amoeba: E. histolytica
- Bull’s neck infection: C. diphtheriae
- Buffalo hump: Cushing’s syndrome
Fish eye colonies on EMB
Enterobacter
Tests to detect H2S positive
TXL, H2S
- TSI
- SSA
- XLD
- HEA
- SIM
- LIA
Neutral red indicator
SSMac
*SSA
*MAC
A: Red
K: Yellow
Fermenters: Pink-red colonies
NF: Colorless colonies
Triple LOA (+): ?
Triple LOA (-): ?
Triple LOA (+): Plesiomonas
Triple LOA (-): Pantoea
Indole (+)
MAY PEKPEC PO?
- Morganella
- P. vulgaris
- E. coli
- K. oxytoca
- Providencia
- E. tarda
- C. koseri
- Plesiomonas
VP (+)
KEESH
*Klebsiella
*Ewingella
*Enterobacter
*Serratia
*Hafnia
Citrate (+)
Pero Sa CHEEKS
*Providencia
*Serratia
*Citrobacter
*Hafnia
*Ewingella
*Enterobacter
*Klebsiella
*Salmonella enteritidis
Tests with same result: (+) and (-)
MEEC
*Malonate
*Acetate
*Acetamide
*Citrate
