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Flashcards in Enterobacteriaceae Deck (21)
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1
Q

Enterobacteriaceae are gram positive - T/F

A

False- they are gram negative

2
Q

Where do enterobacteriaceae reside mostly?

A

The GI tract of humans and animals, present in water and soil environment

3
Q

What are the benefits?

A
  1. Microbial antagonism
  2. Breakdown and absorption of the food
  3. Waste processing
  4. Vitamin K production
4
Q

Remember what is the important aspects of Gram -negative bacteria?

A

LPS, Lipid A (pathogenesis), outer membrane

5
Q

Characteristics of Entero?

A
  1. Gram - negative
  2. Facultative anaerobic
  3. Rods or coccobacilli
  4. Oxidase negative
    * *Plesiomonas and shegelloids are not oxidase negative
6
Q

What are Coliform bacteria? Name 3

A
  • They are lactose positive bacteria
    1. E.coli
    2. Klebsiella
    3. Enterobacter
7
Q

What is Coliform enumeration?

A

A test to evaluate fecal/ sewage contamination

8
Q

_______ are a better indicator of health risk in salt and fresh water and are more species specific which allows detection of source of contamination

A

Enterococci

9
Q

What bacteria fall under the Enterobacteriaceae heading?

A
  1. Escherichia
  2. Salmonella
  3. Yersinia
  4. Shigella
  5. Klebsiella
  6. Proteus
  7. Citrobacter
  8. Serratia
10
Q

What is the only clinically relevant species known of Escherichia?

A

Escherichia coli

11
Q

What is a serotype? (OHFK)

A
complete antigenic formula of an organism 
O= O antigen
H= flagella 
F= fimbriae
K= capsule
12
Q

Pathotypes: enteric pathotypes

A

List of acronyms

13
Q

ETEC

A

enterotoxigenic

14
Q

EHEC

A

enterohemorrhagic

15
Q

VTEC/STEC

A

verotoxigenic/shiga-like toxic

16
Q

EPEC

A

enteropathogenic

17
Q

RPEC

A

rabbit pathogenic

18
Q

EAEC

A

enteroadherent

19
Q

DAEC

A

diffusely adherent

20
Q

EIEC

A

enteroinvasive

21
Q

EAggEC

A

enteroadherent aggregative