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Microbiology > Micro - Vibrio & Related Genera > Flashcards

Micro - Vibrio & Related Genera Flashcards

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Biology 101 flashcards
1
Q

Common characteristics of Genus Vibrio

A
  • Gram -
  • Oxidase +
  • Curved bacilli
  • Most species are soonoses
  • Most are marine
  • Some in fresh water
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2
Q

What species of genus Vibrio causes the ds. Cholerae?

A

Vibrio cholerae

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3
Q

What type of ds. is Cholera?

A

Enteric ds. - massive amounts of fluids lost

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4
Q

How is Vibrio cholerae spread?

A

Water bourne

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5
Q

What are the virulence factors of Vibrio cholerae?

A
  • Exotoxin
  • Flagellum
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6
Q

What is unique about the exotoxin in Vibrio cholerae?

A

Exotoxin has ADP ribosylating activity

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7
Q

What is affected in the GI tract when Vibrio cholerae is present?

A

The fluid secreting proteins in the GI tract are affected

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8
Q

What is a symptom of Cholera ds.?

A

“rice water feces”

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9
Q

What other organism has an exotoxin that has ADP ribosylating activity and affects the fluid secreting proteins of the GI tract?

A

E.coli

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10
Q

How would you differentiate Vibrio cholerae from E.coli?

A

V.cholerae:

  • shape - curved bacilli
  • oxidase +

E.coli

  • bacilli
  • oxidase -
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11
Q

To contract Cholera does it require a large or small does of the bacteria Vibrio cholerae?

A

Large infectious dose

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12
Q

Is the ds. Cholera considered an infection or intoxication?

A

food/water INFECTION

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13
Q

What is the incubation period for Cholera ds.?

A

24-48 hrs.

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14
Q

What symptoms will you see with Cholera ds.?

A
  • Massive fluid loss
  • Dehydration
  • Electolyte imbalance
  • “RICE WATER FECES”
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15
Q

What species of the of the Vibrio genus causes a food INFECTION associated with raw seafood/fish

A

Vibrio parahaemolyticus

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16
Q

What symptoms will you see with the food infection caused by Vibrio parahaemolyticus?

A
  • Gastroenteritits
  • Mild diarrhea
17
Q

Does Vibrio parahaemolyticus replicate fast or slow?

A

Rapid - replicates every 9 min

18
Q

What species of the Vibrio genus causes a flesh eating ds.?

A

Vibrio vulnificus

19
Q

Where is Vibrio vulnificus found?

A

Marine water (common in Gulf of Mexico)

20
Q

How does Vibrio vulnificus spread?

A

Enters through cuts/scrapes on skin

21
Q

Vibrio vulnificus is consdiered what kind of bacteria?

A

Flesh eating bacteria

22
Q

What are the 4 flesh eating bacteria?

A

Gram +

  • Streptococcus pyogenes
  • Staphylocococcus aureus

Gram -

  • Vibrio vulnificus
  • Aeromonas species
23
Q

What organism is responsible for a food INFECTION associated with raw eggs, raw chicken and hamburger?

A

Campylobacter jejuni

24
Q

What is Campylobacter jejuni also responsible for?

A

3rd most common cause of gasterenteritis

25
Q

What is more common Campylobacter jejuni or Salmonella enteritidis?

A

Campylobacter jejuni

26
Q

How could you differentiate Campylobacter jejuni from Salmonella enteritidis and E.coli?

A

Campylobacter jejuni

  • shape - curved bacilli
  • oxidase +

Salmonella enteritids

  • Shape - bacilli
  • oxidase -

E.coli

  • Shape - bacilli
  • oxidase -
27
Q

Which organism causes 90% of all gastric ulcers?

A

Helicobacter pylori

28
Q

Helicobacter pylori is what type of flora?

A

Normal flora in the stomach

29
Q

What is unique about Helicobacter pylori?

A

It contains a potent urease that protects the organism and allows for ID of infection

Microbiology (12 decks)

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