Enterobacterales: Difference between revisions

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==Background==
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* Order of Gram-negative bacilli comprising seven families
  
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** [[Enterobacteriaceae]]
  
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** [[Erwiniaceae]]
  
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** [[Pectobacteriaceae]]
  
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** [[Yersiniaceae]]
  
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** [[Hafniaceae]]
  
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** [[Morganellaceae]]
  
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** [[Budviciaceae]]
  
   
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===Microbiology===
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*Order of Gram-negative bacilli comprising seven families
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**[[Enterobacteriaceae]]
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**[[Erwiniaceae]]
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**[[Pectobacteriaceae]]
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**[[Yersiniaceae]]
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**[[Hafniaceae]]
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**[[Morganellaceae]]
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**[[Budviciaceae]]
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  +
===Identification===
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  +
*Main tests include [[lactose fermentation]], [[mannitol fermentation]], [[triple sugar iron agar]] (TSI) for H<sub>2</sub>S production and gas, [[indole test]], [[urease test]], and growth on citrate
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{| class="wikitable sortable"
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!Lactose
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!PPA
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!H<sub>2</sub>S
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!Mannitol
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!Indole
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!Urease
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!Growth on Citrate
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!Other Tests
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!Organism
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|-
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| rowspan="5" | +
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| rowspan="5" |–
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| rowspan="5" |–
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| rowspan="5" | +
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| rowspan="2" | +
  +
| +
  +
| +
  +
|nonmotile, methyl red –
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|[[Klebsiella oxytoca]]
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|-
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|–
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|–
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|
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|[[Escherichia coli]]
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|-
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| rowspan="3" |–
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| +
  +
| +
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|TSI A/A with gas, nonmotile
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|[[Klebsiella pneumonia]]
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|-
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| +/±
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| +
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|TSI A/A with gas, motile, arginine dihydrolase +
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|[[Enterobacter cloacae]]
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|-
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|–
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| +
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|TSI A/A with gas, motile, arginine dihydrolase –
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|[[Klebsiella aerogenes]]
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|-
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| +/±
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|–
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|–/+
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| +
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|–
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|–/±
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| +
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|motile, methyl red +
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|[[Citrobacter freundii]]
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|-
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| rowspan="3" |±
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| rowspan="3" |–
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|±
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| +
  +
| +
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| +/±
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| +
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|motile, methyl red +
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|[[Citrobacter koseri]]
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|-
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| rowspan="2" |–
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| +
  +
|±
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| +
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|–
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|
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|[[Yersinia enterocolitica]]
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|-
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|–
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| +
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|–
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|–
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|oxidase +
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|[[Plesiomonas shigelloides]]
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|-
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| rowspan="13" |–
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| rowspan="6" | +
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| rowspan="2" | +
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| rowspan="2" |–
  +
| +
  +
| +
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|–/±
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|
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|[[Proteus vulgaris]]
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|-
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|–
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| +
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| +/±
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|
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|[[Proteus mirabilis]]
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|-
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|±
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|–
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|–
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| +
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|–
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|TSI with gas
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|[[Proteus penneri]]
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|-
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|–/±
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|–
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| +
  +
| +
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|–
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|TSI with gas
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|[[Morganella morganii]]
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|-
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| rowspan="2" |–
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| +
  +
| +
  +
| +
  +
| +
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|TSI no gas
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|[[Providencia rettgeri]]
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|-
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|–
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| +
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|–
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| +
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|TSI no gas
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|[[Providencia stuartii]]
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|-
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| rowspan="7" |–
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| +
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|–
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| +
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|–
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|–
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|
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|[[Edwardsiella tarda]]
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|-
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| +/±
  +
| +
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|–
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|–
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|±
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|
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|[[Salmonella]]
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|-
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| rowspan="5" |–
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| rowspan="4" | +
  +
| +
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|–
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|–
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|
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|[[Escherichia coli]] (inactive)
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|-
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| rowspan="3" |–
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| rowspan="2" |–
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| rowspan="2" | +
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|DNAse –
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|[[Hafnia]]
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|-
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|DNAse +
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|[[Serratia marcescens]]
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|-
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|–
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|–
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|
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|[[Shigella]] (other than ''S. dysenteriae'')
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|-
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|–
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|–
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|–
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|–
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|
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|[[Shigella dysenteriae]]
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|}
 
[[Category:Gram-negative bacilli]]
  
[[Category:Gram-negative bacilli]]

Latest revision as of 02:47, 11 February 2022

Background

Microbiology

Identification

Lactose PPA H2S Mannitol Indole Urease Growth on Citrate Other Tests Organism
+ – – + + + + nonmotile, methyl red – Klebsiella oxytoca
– – Escherichia coli
– + + TSI A/A with gas, nonmotile Klebsiella pneumonia
+/± + TSI A/A with gas, motile, arginine dihydrolase + Enterobacter cloacae
– + TSI A/A with gas, motile, arginine dihydrolase – Klebsiella aerogenes
+/± – –/+ + – –/± + motile, methyl red + Citrobacter freundii
± – ± + + +/± + motile, methyl red + Citrobacter koseri
– + ± + – Yersinia enterocolitica
– + – – oxidase + Plesiomonas shigelloides
– + + – + + –/± Proteus vulgaris
– + +/± Proteus mirabilis
± – – + – TSI with gas Proteus penneri
–/± – + + – TSI with gas Morganella morganii
– + + + + TSI no gas Providencia rettgeri
– + – + TSI no gas Providencia stuartii
– + – + – – Edwardsiella tarda
+/± + – – ± Salmonella
– + + – – Escherichia coli (inactive)
– – + DNAse – Hafnia
DNAse + Serratia marcescens
– – Shigella (other than S. dysenteriae)
– – – – Shigella dysenteriae
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