Enterobacterales: Difference between revisions
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==Background== |
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===Microbiology=== |
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*Order of Gram-negative bacilli comprising seven families |
*Order of Gram-negative bacilli comprising seven families |
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**[[Budviciaceae]] |
**[[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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|nonmotile, methyl red – |
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|[[Klebsiella oxytoca]] |
|[[Klebsiella oxytoca]] |
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Revision as of 18:02, 16 September 2020
Background
Microbiology
- Order of Gram-negative bacilli comprising seven families
Identification
- Main tests include lactose fermentation, mannitol fermentation, triple sugar iron agar (TSI) for H2S production and gas, indole test, urease test, and growth on citrate
| 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 species | |||
| – | + | + | – | – | Escherichia coli (inactive) | |||
| – | – | + | DNAse – | Hafnia species | ||||
| DNAse + | Serratia marcescens | |||||||
| – | – | Shigella species (other than S. dysenteriae) | ||||||
| – | – | – | – | Shigella dysenteriae |
