Enterobacteriaceae (Non-Stool pathogens)

Beta

E. coli hemolysis

LF

E. coli MAC fermentation

SF

E. coli MACSORB fermentation

A

E. coli slant

A

E. coli butt

negative

E. coli gas

negative

E. coli H2S

positive

E. coli indole

negative

oxidase

gamma

Citrobacter freundii hemolysis

LF

Citrobacter freundii MAC fermentation

A

Citrobacter freundii slant

A

Citrobacter freundii butt

negative

Citrobacter freundii gass

positive

Citrobacter freundii H2S

negative

Citrobacter freundii indole

negative

oxidase

Gamma

Klebsiella pneumoniae hemolysis

LF

Klebsiella pneumoniae MAC fermentaiton

A

`Klebsiella pneumoniae slant

A

Klebsiella pneumoniae butt

positive

Klebsiella pneumoniae gas

negative

Klebsiella pneumoniae H2S

negative

Klebsiella pneumoniae indole

negative

Klebsiella pneumoniae oxidase

gamma

Serratita marcescens hemolysis

NFL

Serratita marcescens MAC fermentation

K

Serratita marcescens slant

A

Serratita marcescens butt

negative

Serratita marcescens gass

negative

Serratita marcescens H2S

negative

Serratita marcescens indole

negative

Serratita marcescens oxidase

gamma

Proteus mirabilis hemolysis

NLF

Proteus mirabilis MAC fermentation

K

Proteus mirabilis slant

A

Proteus mirabilis butt

negative

Proteus mirabilis gas

negative

Proteus mirabilis H2S

Negative (sometimes positive)

Proteus mirabilis indole

negative

Proteus mirabilis oxidase

Citrobacter disease associations

inhabitants of the intestinal tract
most common clinical infection is UTI
can cause septicemias, meningitis, brain abscesses, and neurologic complications

Enterobacter disease association

health care-associated infections

Klebsiella disease association

liver abscesses, pneumonis, septicemia, UTI
communit-acquired pyogenic liver abscesses

Proteus disease association

swarm
UTI, wounds, ears, diarrhea, sepsis

Serratia disease association

infections in health care settings
respiratory and wounds
red pigment (prodogiosin)

gamma

Enterobacter hemolysis

NLF

Enterobacter MAC fermentation

K

Enterobacter slant

A

Enterobacter butt

positive

Enterobacter Gas

negative

Enterobacter H2S

negative

Enterobacter indole

negative

Enterobacter oxidase