Gram negative bacteria: Difference between revisions

Revision as of 16:09, 26 May 2014

Lactose fermenting (Lactose positive)
- Enterobacter spp
- Escherichia coli
- Klebsiella spp
- Citrobacter spp^
- Serratia spp^
Non lactose-fermenting (Lactose negative)
- Oxidase (-)
  - Acinetobacter spp
  - Burkholderia spp
  - E. coli
  - Proteus spp
  - Salmonella spp
  - Shigella spp
  - Serratia spp^
  - Stenotrophomonas maltophilia
- Oxidase (+)
  - P. aeruginosa
  - Aeromonas spp.

^Serratia and Citrobacter spp can appear initially as non-lactose fermenting due to slow fermentation

“Gram negative coccobacilli” may suggest Haemophilus species
“Lactose-positive gram negative rods” may suggest Enterobacteriaceae, such as E. coli, Klebsiella, or Enterobacter spp
“Lactose-negative gram negative rods” may suggest Pseudomonas

Authors:

@@ Line 6: / Line 6: @@
 ==Rods (Bacilli)==
-{| border="1" width="327"
+===Aerobic===
-|-
+*'''Lactose fermenting (Lactose positive)'''
-| '''Lactose Fermenters<br/>'''
+**Enterobacter spp
-| '''Indole<br/>'''
+**Escherichia coli
-| '''morphology<br/>'''
+**Klebsiella spp
-|-
+**Citrobacter spp^
-|
+**Serratia spp^
-E. Coli
+*'''Non lactose-fermenting (Lactose negative)'''
+**''Oxidase (-)''
+***Acinetobacter spp
+***Burkholderia spp
+***E. coli
+***Proteus spp
+***Salmonella spp
+***Shigella spp
+***Serratia spp^
+***Stenotrophomonas maltophilia
+**''Oxidase (+)''
+***P. aeruginosa
+***Aeromonas spp.
+===Anaerobic===
+*Bacteroides spp,
+*Fusobacterium spp,
+*Prevotella spp.
-| +<br/>
+^Serratia and Citrobacter spp can appear initially as non-lactose fermenting due to slow fermentation
-| flat
-|-
-| Klebsiella
-| -
-| muccoid<br/>
-|-
-| Enterobacter
-| -<br/>
-| muccoid
-|-
-| Citrobacter
-| -
-| flat
-|-
-| Arizona
-| -
-| <br/>
-|}
-<br/>
-{| border="1" width="342"
-|-
-| '''Non-Lactose Fermenters'''
-| '''Characteristics<br/>'''
-|-
-|
-Pseudomonas
-| usually strict aerobes, oxidase +, small
-|-
-| Salmonella, Shigella
-| <br/>
-|-
-| Acinetobacter
-| coccobac
-|-
-| Proteus<br/>
-| swarming
-|-
-| H. Flu<br/>
-| tiny, chocolate agar
-|-
-| Pasteurella
-| <br/>
-|}
 ==Interpretations of Key Phrases==