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Veterinary Infectious Diseases > Diseases Due to Gram Negative Rods IV > Flashcards

Diseases Due to Gram Negative Rods IV Flashcards

1
Q

what is the appearance of Pasteurellaceae?

A

gram negative rods/coccobacilli
bipolar staining: safety pin

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2
Q

are Pasteruellaceae motile?

A

no

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3
Q

how stable are Pasteurellaceae in the environment?

A

unstable

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4
Q

is Pasteurellaceae commensal?

A

yes: upper respiratory tract mucosae mostly

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5
Q

describe Pasteurella multocida: hemolytic or not and capsule

A

non-hemolytic
thick capsule

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6
Q

describe Mannheimia haemolytica: former name, hemolytic or not, who it infects

A

Pasteurella haemolytica
hemolytic
ruminants

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7
Q

is Histophilus/Haemophilus heamolytic?

A

haemolytic or non-haemolytic

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8
Q

does Pasteurellaceae have flagella?

A

no

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9
Q

what virulence factors does Pasteurellaceae have for adherence?

A

adhesions
fimbriae
filamentous haemagglutinins

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10
Q

what makes up the capsule antiphagocytic effect of Pasteurellaceae?

A

hylauronic acid
heparin
chondroitin
looks like the host

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11
Q

Pasteurella multocida colonizes ___________________________

A

ciliated respiratory epithelial cells

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12
Q

what does Pasteurella multocida cause in cattle?

A

shipping fever
enzootic pneumonia of calves
mastitis
septicemia

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13
Q

what is atrophic rhinitis of swine caused by?

A

Pasteurella multocida type D

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14
Q

how is Pasteurella multocida transmitted in swine?

A

inhalation
from sow
aerosols

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15
Q

how is Pasteurella multocida controlled in swine?

A

vaccine

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16
Q

what is Pasteurella multocida often mixed with in swine?

A

Bordatella bronchiseptica

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17
Q

what causes fowl cholera in birds?

A

Pasteurella multocida type F

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18
Q

who does fowl cholera impact?

A

turkeys
chickens
wild fowl

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19
Q

what is the acute form of fowl cholera/Pasteurella multocida in birds?

A

septicemia to fatal in 6-12 hours

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20
Q

what causes snuffles in rabbits?

A

Pasteurella multocida type A
+/- Staphylococcus

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21
Q

is Pasteurella multocida in rabbits opportunistic?

A

yes: transport, overcrowding, cole, poor ventilation

22
Q

what are the sequelae with snuffles in rabbits?

A

bronchopneumonia
conjunctivitis
otitis
abscesses

23
Q

what is the treatment for snuffles in rabbits?

A

antibiotics

24
Q

is Pasteurella multocida zoonotic?

A

yes: bites, scratches

25
Q

describe the appearance of Bartonella henselae

A

gram negative rod

26
Q

what is the zoonotic importance of Bartonella henselae?

A

cat scratch disease: scratching, biting, or licking wounds/scabs

27
Q

what can cat scratch disease affect?

A

brain
eyes
heart
other internal organs

28
Q

what causes bovine respiratory disease (BRD)?

A

Mannheimia haemolytica
Pasteurella multocida
H. somni
M. bovis
predisposing event

29
Q

what are the morbidity and mortality of bovine respiratory disease?

A

30-50%
1-10%

30
Q

how is bovine respiratory disease controlled?

A

antibiotics
vaccine
stress reduction

31
Q

what causes pneumonic pasteurellosis in sheep?

A

Mannheimia haemolytica
sporadically Pasteurella multocida

32
Q

what characterizes the acute form of pneumonic pasteurellosis in young sheep?

A

fever
respiratory distress
sudden death

33
Q

what can cause septicemia in lambs?

A

Mannheimia haemolytica
Bibersteinia trehalosi

34
Q

what causes septicemia in cattle and bison?

A

Pasteurella multocida types B and E

35
Q

does Histophilus somni survive well in the environment?

A

yes: 70 days

36
Q

what is the acute form of Histophilus somni like?

A

septicemia
thromboembolic meningoencephalitis
blindness
ataxia
myocarditis
pneumonia
sudden death

37
Q

what causes glasser disease?

A

Haemophilus parasuis

38
Q

who does glasser disease impact?

A

swine

39
Q

how is Haemophilus parasuis transmitted in swine?

A

from sow: aeerosol inhalation, direct contact

40
Q

how is glasser disease controlled?

A

antibiotics
multivalent vaccines
stress reduction

41
Q

which Bordatella infects humans?

A

Bordatella pertussis: whooping cough

42
Q

what does Bordatella look like under a microscope with a gram stain?

A

gram negative rods or coccobacilli

43
Q

is Bordatella commensal?

A

yes: upper respiratory tract mucosa

44
Q

true/false: Bordatella is always localized and never systemic

A

true

45
Q

who does Bordatella parapertussis infect?

A

lambs: pneumonia

46
Q

how can infection with Pasteurellaceae occur?

A

endogenous or exogenous

47
Q

what are some commensals that cause disease when local or systemic host immunity is compromised?

A

Pasteurella
Mannheimia
Histophilus/Haemophilus

48
Q

what is the pathogenesis of Pasteurellaceae?

A

adherence: adhesions, fimbriae, filameentouss haemagglutinins
no flagella
capsule: hyaluronic acid, heparin, chondroitin
siderophores
endotoxins
exotoxins

49
Q

what cells does Mannheimia haemolytica colonize?

A

ciliated respiratory epithelial cells

50
Q

what is the acute form of pneumonic pasteurellosis like in adult sheep?

A

mastitis

51
Q

what is Histophilus somni a commensal of?

A

bovine genital and respiratory tracts

Veterinary Infectious Diseases (29 decks)

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