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Bacteriology > Gram Negative Coccobacilli > Flashcards

Gram Negative Coccobacilli Flashcards

1
Q

Growth factors of Haemophillus

A

X and V factor

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2
Q

X factor

A

Hemin - heat stable factor

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3
Q

V factor

A

NAD - Heat labile factor

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4
Q

Pfeiffer’s bacillus

A

H. influenzae

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5
Q

Most frequently encountered and deadly Serotype of H. influenzae

A

Serotype B

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6
Q

Infection caused by H. influenzae

A

Meningitis (3rd)
Epiglotittis (major cause)

Others: #2 Otitis media

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7
Q

Organism that exhibit sattelitism in H. influenzae

A

Staphylococcus aureus

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8
Q

Colonies of H. influenzae in BAP

A

Dew drops colonies; Non-hemolytic

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9
Q

Koch’s weeks bacillus

A

H. aegypticus

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10
Q

Infection caused by H. aegypticus

A

Pink eye conjunctivitis

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11
Q

Causes Brazillian purpuric fever

A

Haemophilus influenzae biogroup aegypticus

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12
Q

Chancroid bacillus

A

H. ducreyi

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13
Q

Infection caused by H. ducreyi

A

Soft chancre/Ulcerative chancroid (painful)

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14
Q

Microscopic appearance of H. ducreyi

A

Schools of Fish
Fingerprint appearance
Coccobacilli in ROWS

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15
Q

Haemophilus spp. that may cause Endocarditis

A

H. parainfluenzae

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16
Q

Differential Identification of H. influenzae

  • X factor:
  • V factor:
  • Hemolysis:
  • Porphyrin Test:
A
  • X factor: +
  • V factor: +
  • Hemolysis: Negative
  • Porphyrin Test: Negative
17
Q

Differential Identification of H. ducreyi

  • X factor:
  • V factor:
  • Hemolysis:
  • Porphyrin Test:
A
  • X factor: +
  • V factor: Negative
  • Hemolysis: Negative
  • Porphyrin Test: Negative
18
Q

Differential identification of H. haemolyticus

  • X factor:
  • V factor:
  • Hemolysis:
  • Porphyrin Test:
A
  • X factor: Positive
  • V factor: Positive
  • Hemolysis: Positive
  • Porphyrin Test: Negative
19
Q

Differential identification of H. parahaemolyticus

  • X factor:
  • V factor:
  • Hemolysis:
  • Porphyrin Test:
A
  • X factor: Negative
  • V factor: Positive
  • Hemolysis: Positive
  • Porphyrin Test: Positive
20
Q

Differential identification of H. parainfluenzae

  • X factor:
  • V factor:
  • Hemolysis:
  • Porphyrin Test:
A
  • X factor: Negative
  • V factor: Positive
  • Hemolysis: Negative
  • Porphyrin Test: Positive

Bacteriology (24 decks)

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