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Bacteriology & Mycology > Respiratory Infections III (26) - End E2 > Flashcards

Respiratory Infections III (26) - End E2 Flashcards

Dr. Erol

1
Q

What are characteristics of bordetella spp.?

A

bordetella
obligate aerobes

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2
Q

Toxigenic strains of bordetella spp. _____

A

agglutinate mammalian red blood cells

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3
Q

What is the causative agent of canine infectious tracheobronchitis?

A

bordetella bronchiseptica

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4
Q

What is the causative agent for atrophic rhinitis? What species?

A

B. bronchiseptica

pigs

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5
Q

What is the causative agent of coryza? What species?

A

b. avium

turkeys

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6
Q

Differentiate bordetella bronchiseptica and bordetella avium

A

bronchiseptica: urease positive!!, nitrate reduction

avium: urease negative, no nitrate reduction

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7
Q

What is the virulence factors for both b. bronchiseptica and b. avium?

A

dermonecrotoxic toxin

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8
Q

What does dermonecrotoxic toxin do? What bacteria?

A

induces skin necrosis
impairs osteogenesis

both b. bronchiseptica and b. avium

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9
Q

What are diagnostic procedures for bordetella sp.?

A
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10
Q

What is the formal term for kennel cough? Causative agent?

A

canine infectious tracheobronchitis

bordetella bronchiseptica

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11
Q

What are the most important etiological agents in kennel cough?

A

bordetella bronchiseptica
canine adenovirus 2
canine parainfluenzavirus 2

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12
Q

How is canine infectious tracheobronchitis transmitted?

A

respiratory secretions - direct contact or aerosols

mechanical transfer on footwear or clothing, on contaminated feeding utensils and on fomites

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13
Q

T/F: Morbidity of kennel cough is high, but mortality low

A

TRUE

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14
Q

T/F: Organisms are not shed in respiratory secretions after clinical recovery regarding kennel cough

A

FALSE - are shed

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15
Q

What are signs of canine infectious tracheobronchitis? Dogs remain_____

A

coughing
gagging or retching
mild serous oculonasal discharge

affected dogs remain active, alert, and non-febrile

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16
Q

Canine Infectious Tracheobronchitis is [chronic/self-limiting]

A

self-limiting

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17
Q

How do you diagnose Canine Infectious Tracheobronchitis?

A

history
virulent isolates hemagglutination of ovine/bovine RBCs

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18
Q

What is treatment for Canine Infectious Tracheobronchitis?

A

mild cases - don’t require specific therapy
amoxicillin, tetracycline, fluoroquinolones

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19
Q

Atopic rhinitis in pigs is caused by _____

A

b. bronchiseptica

20
Q

What does atrophic rhinitis cause in piglets less than 4 weeks

A

turbinate hypoplasia WITHOUT snout distortion

21
Q

Infection with b. bronchiseptica in pigs may facilitate _____

A

colonization by toxigenic pastuerella multocide type B, which results in severe infection

22
Q

A pig’s snout has early signs of atrophic rhinitis. What is the causative agent?

A

b. bronchiseptica

note: the lacrimation and the shortened, deeply wrinkled snout

23
Q

What are diagnostic procedures for atrophic rhinitis?

A
24
Q

How do you treat atrophic rhinitis?

A
25
Q

What is the causative agent of turkey coryza?

A

b. avium

26
Q

What are the clinical signs of turkey coryza?

A

mucus accumulation in nares with swelling of submaxillary sinuses
beak-breathing
excessive lacrimation
sneezing

27
Q

How is turkey coryza transmitted?

A

direct contact
aerosols
environment sources

28
Q

Regarding turkey coryza, infection with b. aivum exposes it to _______

A

secondary infection with bacteria like e. coli

29
Q

How do you diagnose turkey coryza?

A

Guinea pig thing

30
Q

What is treatment and control of turkey coryza?

A

broad-spectrum antibiotics early in infection
commercially available bacterins and MLV
thorough cleaning and disinfection of turkey houses after an outbreak

31
Q

What is the causative agent of infectious coryza of chickens?

A

avibacterium paragallinarum

32
Q

What is infectious coryza of chickens?

A

affects upper RT and paranasal sinuses of chickens

has economic importance

33
Q

How is Infectious Coryza of chickens transmitted?

A

direct contact
aerosols
contaminated drinking water

34
Q

What are the key points of avibacterium paragallinarum?

A
35
Q

What are clinical signs of infection coryza of chickens?

A

mild form: manifests as depression, serous nasal discharge, and slight facial swelling

severe: swelling of one o both infraorbital sinuses and edema of the surrounding tissues

egg production losses

copious exudate at post-mortem in infraorbital sinuses

tracheitis, bronchitis, and airsacculitis

36
Q

How do you diagnose infectious coryza of chickens?

A

facial swelling - characteristic
immunoperoxidase

37
Q

How do you treat infectious coryza of chickens?

A

sulfonamides or oxytetracyclin

38
Q

What is the causative agent of avian chlamydiosis?

A

c. psittaci

39
Q

What is the epidemiology of avian chlamydiosis?

A

present in respiratory discharges and feces of infected birds
inhalation or by ingestion
stress

40
Q

What are clinical signs of avian chlamydiosis?

A

generalized infection affecting particularly digestive and respiratory tracts

loss of condition, nasal and ocular discharges, diarrhea, and respiratory distress

41
Q

The most frequent postmortem findings of avian chlamydiosis is

A

hepatosplenomegaly
airsacculitis
peritonitis

42
Q

A bird necropsy revealed hepatomegaly. What is the disease and causative agent?

A

c. psittaci
Avian chlamydiosis

43
Q

How do you diagnose avian chlamydiosis?

A

stained impression smears

44
Q

How do you treat avian chlamydiosis?

A

TETRACYCLINES - treatment of choice
vaccines not available

45
Q

Of the diseases in this lecture, what is the notifiable disease?

A

avian chalmydiosis - c. psittaci

Bacteriology & Mycology (39 decks)

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