Exam 3: Mannheimia hemolytica, Bibersteinia, Haemophilus, and Histophilus Flashcards

1
Q

Mannheimia hemolytica used to be:

A

Pasteurella hemolytica

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2
Q

What are the capsule types of M. hemolytica

A

A-F

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3
Q

Does M. hemolytica survive well in the environ.

A

no

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4
Q

VF of M. hemolytica

A
  1. Leukotoxin
  2. Transferrin binding p
  3. capsule
  4. endotoxins (LPS)
  5. Fimbriae
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5
Q

What does M. hemolytica cause in ruminants

A

pneumonia

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6
Q

Which serovars of M. hemolytica do sheep get

A

All of them

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7
Q

what serovars of M. hemolytica do cows get

A

1, 2, 6

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8
Q

Where is M. hemolytica commonly found in sheep

A

nose

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9
Q

What causes Bacterial broncho pneumonia in calves

A

M. hemolytica

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10
Q

What is the triggor for Bronchopneumonia in calves

A

Stress

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11
Q

Where does M. hemolytica replicate in calf

A

nasopharynx

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12
Q

What is a secondary pathogen of bronchopneumonia in calves

A

P. multocida

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13
Q

How do you Dx M. haemolytica

A

Culture

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14
Q

How do you tx M. haemolytica

A

Abx and corticosterroids

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15
Q

Who becomes infected with Bibersteinia trehalosi

A

sheep

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16
Q

what does B. trehalosi cause in sheep

A

Septicaemiae

17
Q

DDx of Bibersteinia trehalosi

A

Clostridium perfringens enterotoxemia

18
Q

What are the cause of B trehalosi

A

Stress

19
Q

Haemophilus is ___ dependent meaning stapph. is necessary for culture

A

NAD

20
Q

Haemophilus are commensals where?

A

Mucosae of resp. and repro tract

21
Q

VF of Haemophilus

A
  1. Endotoxin
  2. Fimbrae
  3. Neuroamidase
  4. TBP
22
Q

What is the disease caused by H. parasuis

A

Glasser dz

23
Q

what does glasser dz cause in pigs

A
  1. septicemia
  2. meningitis
  3. polyserositis
24
Q

How do you tx glasser dz

A

antimicrobials

25
Q

how do you prevent glasser dz

A

vacc.

26
Q

What does H. felis cause in cats?

A

Chronic pneumonia and conjunctivitis

27
Q

How do you incubate Histophilus somnei

A

incubate 2 days with 5-10% CO2

28
Q

where does H. somnei colonize

A

Mucosal surfaces of ruminants

29
Q

C/S of H. somnei

A
Septicemia
CNS
Arthritis
conjunctivits
Myocarditis
Pneumonia
30
Q

VF of H. somnei

A
  1. LOS
  2. OMPs
  3. Host cell interaction
  4. Biofilms
31
Q

Which VF of H. somnei is used in activation of caspases and induction of apoptosis

A

Host cell interaction

32
Q

WHich VF of H. somnei cause immune evasion and complement resistance

A

LOS (Lippligosaccharides)

33
Q

What are the two OMP VFs of H. somnei

A
  1. Transferrin binding proteins

2. Ig binding proteins

34
Q

How do you Dx H. somnei

A

Bacterial culture

35
Q

How do you Tx H. somnei

A

Abx

36
Q

How do you prevent H. somnei

A

vacc.