Yersinia enterocolitica Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

what is the biology of Yersinia?

A
  • Gram Negative Bacilli
  • “Bi-Polar Staining
  • Non-lactose fermenter
  • Motile at 25° but not at 37°
  • Coagulase (+)
  • Cold Growth
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what does yersinia ferment?

A

sucrose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

how does yersinia spread?

A
  • fecal-oral if contact with animals (zoonotic)
  • Associated with unpasteurized milk, soft cheeses and undercooked pork products
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

when is there higher incidence of yersinia infeciton?

A

Higher incidence in cold climates and months

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

how does the infection of yersinia progress?

A
  1. Access to lamina propria is primarily through M cells
  2. T3SS effectors mediate resistance to mac killing and can trigger apoptosis
  3. Travel via macrophages to MLN and replicate intracellular.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

most yersenia infections occur on who?

A

children

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what does yersinia infection cause?

A

gastroenteritis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

yersinia infection has what symptoms?

A
  1. Severe abdominal cramping
  2. Low-grade fever
  3. Vomiting
  4. Large volume watery diarrhea,
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what complications can arise with yersinia enterocolitica?

A
  • Reactive arthritis (HLA-B27)
  • Pseudo-appendicitis*/mesenteric adenitis (older children&teens)
  • Erythema nodosum** (adults)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what treatment is given to yersinia enterocolitica infection?

A

Supportive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

how does yersinia look on Hektoen agar?

A

Yellow colony

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

how does yersinia look on MacConkey agar?

A

whitish-transluscent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly