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B&M Exam 2 > Actinobacillus equuli > Flashcards

Actinobacillus equuli Flashcards

1
Q

subspecies

A

equuli
haemolyticus

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2
Q

A equuli subspecies equuli – hosts

A

horses
pigs

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3
Q

A equuli subspecies equuli – locations

A

primarily in tonsils, intestinal tract, reproductive tract

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4
Q

A equuli subspecies equuli – diseases

A

sleepy foal disease (acute bacteremia)

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5
Q

what happens when sleepy foal disease becomes chronic

A

purulent nephritis
arthritis

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6
Q

A equuli subspecies equuli – growth

A

macconkey agar
non hemolytic
but still has RTC toxin

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7
Q

a equuli subspecies haemolyticus – hosts

A

horses

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8
Q

a equuli subspecies haemolyticus – location

A

primarily in respiratory tract

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9
Q

a equuli subspecies haemolyticus – hemolysis?

A

hemolytic (RTX toxin)

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10
Q

prevalence of a equuli subspecies haemolyticus

A

less common

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11
Q

what is sleepy foal disease

A

foal bacteremia

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12
Q

when is sleepy foal disease obtained

A

in utero or during birth

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13
Q

what can happen if coinfection with strongyloides vulgaris

A

aneurysms
parasitic thrombus and arteritis

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14
Q

less acute infection of sleepy foal disease

A

abscesses and lesions in kidneys and joints

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15
Q

what disease shows facial celulitis

A

sleepy foal disease

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16
Q

a equuli subspecies haemolyticus – age of horses affected

A

primarily adult disease
but can also case sleepy foal disease

17
Q

a equuli subspecies haemolyticus – diseases

A

abortion
stillbirth
meningitis
respiratory disease
wound infections
bacteremia
arthritis
endocarditis
inflamed wounds

18
Q

zoonotic?

A

yes
isolated from humans following horse bites

19
Q

virulence

A

LPS (endotoxin)
adherence factors
RTC toxin (weak)

20
Q

compromising factors

A

mare carrying bacteria in genital tract prior to delivery
stress
infection
climate
parasitism – strongyloides vulgaris
overtraining
bad weather

21
Q

immunity

A

vaccination of mares – not commercially available
sanitation of birthing environment
maternal antibodies in colostrum
prebreeding culture screening may prevent it

22
Q

what would vaccination of mares provide

A

passive immunity to foals

23
Q

treatment

A

antibiotics

B&M Exam 2 (31 decks)

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