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BACTERIOLOGY LEC > Erysipelothrix > Flashcards

Erysipelothrix Flashcards

1
Q

What is the morphology of Erysipelothrix rhusiopathiae?

A

Gram-positive rods, no spores, no flagella

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2
Q

What is the primary habitat of Erysipelothrix rhusiopathiae?

A

Alkaline Soil, water, and the tonsils of swine

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3
Q

What is the oxygen requirement for Erysipelothrix rhusiopathiae?

A

Facultative anaerobe

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4
Q

What is the primary mode of infection for Erysipelothrix rhusiopathiae?

A

Oral ingestion or skin abrasions

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5
Q

What disease does Erysipelothrix rhusiopathiae cause in swine?

A

Swine erysipelas

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6
Q

What are the three forms of swine erysipelas?

A

Acute, subacute, and chronic

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7
Q

What form of swine erysipelas characterized by High fever (41.1°C), deep red patches on the skin, enlarged spleen and lymph nodes, hemorrhages in the stomach and intestines

A

Acute form Form

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8
Q

What form of swine erysipelas characterized by Diamond-shaped skin lesions (diamond skin disease)

A

Subacute Form

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9
Q

What form of swine erysipelas characterized by Vegetative endocarditis and arthritis

A

Chronic Form

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10
Q

What disease does Erysipelothrix rhusiopathiae cause in sheep?

A

Polyarthritis

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11
Q

What disease does Erysipelothrix rhusiopathiae cause in cattle?

A

Arthritis (tibio-tarsal, stifle, carpal joints)

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12
Q

What disease does Erysipelothrix rhusiopathiae cause in birds?

A

Bluecomb disease (cyanotic skin, diarrhea, and death)

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13
Q

What disease does Erysipelothrix rhusiopathiae cause in humans?

A

Erysipeloid (localized skin infection)

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14
Q

What is the primary virulence factor of Erysipelothrix rhusiopathiae?

A

Hemolysin

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15
Q

What is the primary mode of entry for Erysipelothrix rhusiopathiae in sheep?

A

Through docking and castration wounds

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16
Q

What is the primary mode of entry for Erysipelothrix rhusiopathiae in swine?

A

Oral ingestion or skin abrasions

17
Q

What is the primary diagnostic method for Erysipelothrix rhusiopathiae?

A

Growth-agglutination test (Wachstumsprobe test)

18
Q

What is the appearance of Erysipelothrix rhusiopathiae colonies on blood agar?

A

Tiny, clear, and glistening colonies with a greenish discoloration

19
Q

What is the appearance of Erysipelothrix rhusiopathiae in gelatin?

A

Bottle brush-like growth

20
Q

What is the primary serotype of Erysipelothrix rhusiopathiae associated with septicemia?

A

Serotype 1 and 2

21
Q

What is the primary treatment for swine erysipelas?

A

Penicillin

22
Q

What is the primary stress factor that predisposes swine to erysipelas?

A

Excessive heat and humidity

23
Q

What is the primary mode of transmission for Erysipelothrix rhusiopathiae in swine?

A

Through urine, feces, saliva, and vomitus of infected animals

24
Q

What is the primary mode of transmission for Erysipelothrix rhusiopathiae in birds?

A

Through contaminated feed and water

BACTERIOLOGY LEC (7 decks)

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