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Exam 5 Flashcards

1
Q

Bovine keratoconjuctivits

A

Morexella bovison ocular membranes of cattle, infects conjunctiva and extends to cornea and possible ulceration. May result in permanent blindness

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2
Q

Morexella General features

A

Gram negative
Strict aerobe
Narrow zone of complete hemolysis

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3
Q

Morexella bovis virulence factors

A

Hemolysin, endotoxin, pili, iron regulated proteins

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4
Q

Atrophic rhinitis

A

Bordetella bronchiseptica. Direct contact in swine leads to infection and can have secondary invasion by P. multicoda. Can be pneumonia in young pigs

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5
Q

Kennel cough and pneumonitis

A

Bordetella bronchiseptica. Can be transmitted in aerosol droplets and can be the primary agent of pneumonitis can be associated with Infections Canine Distemper

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6
Q

Bordetella bronchiseptica general features

A

Gram negative
Strict aerobe
Cocco-bacilli or pleomorphic
Dull colonies

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7
Q

B. bronchiseptica virulence

A

Endotoxin
Exotoxin
Tracheal cytotoxin
Pili
Tracheal colonization factor

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8
Q

Bordetella avium

A

Smooth and moist
Gram negative
Rods to cocco-bacilli
Strict aerobe

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9
Q

B. avium virulence factor

A

Dermonecrotic toxin
Tracheal cytotoxin
Pili

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10
Q

Rhinotracheitis

A

In turkeys B. avium. Highly contagious and stress predisposed
Causes oculonasal discharge, sneezing, dyspnea, tracheal ring collapse

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11
Q

Corynebacterium general features

A

Gram positive
Club shaped

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12
Q

Caseous lymphadenitis

A

External form of Corynebacterium pseudotuberulosis
Infects the skin and SQ tissue in sheep and goats. Enter through breaks in skin, ingestion or inhalation and form micro abscesses at site of entry and spread by phagocytic cells into blood and lymph

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13
Q

Internal organ abscesses

A

Internal form of C. pseudotuberculosis in sheep, goats, and horses. Enter through breaks in skin, ingestion or inhalation and form micro abscesses at site of entry and spread by phagocytic cells into blood and lymph

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14
Q

Ulcerative lymphadenitis

A

External form of C. pseudotuberculosis. See inflammation of lymphatic vessels. See abscess on legs and thick greenish pus. Enter through breaks in skin, ingestion or inhalation and form micro abscesses at site of entry and spread by phagocytic cells into blood and lymph

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15
Q

Pigeon fever

A

External form of C. pseudotuberculosis. Single large abscess usually in the pectoral region. Thick capsule and tannish yellow pus. Enter through breaks in skin, ingestion or inhalation and form micro abscesses at site of entry and spread by phagocytic cells into blood and lymph

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16
Q

Virulence factors of C. pseudotuberculosis

A

Surface lipid coat
Phospholipase D
Mycolic acid

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17
Q

UTI

A

Corynebacterium renali in cows infects ureters, kidneys, bladder and pelvis. Attaches to epithelial cells of urinary and genital tracts and ascend to cause pyelonephritis

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18
Q

C. renale virulence factors

A

Fimbraie
Urease

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19
Q

Rhodococcus general features

A

Equi is pathogenic
Gram positive
Pleomorphic

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20
Q

Virulence of Rhodococcus

A

VAP
Mycolic acid lipid layer

21
Q

Pneumonia in foals

A

Rhodococcus equi
Inhaled and enter alveoli and phagocytosed by macrophage. Multiply and destroy macrophage. Leading to neutrophil infiltration and abscess. Appear anorectic with nasal discharge, high mortality, lymphadenitis, abscess in the lungs

22
Q

Trueperella general features

A

Gram positive
Rod
Pus forming

23
Q

Trueperella virulence factors

A

Pylosin O-> protective factor
Neuraminidase
Protease

24
Q

Liver abscesses in cows

A

Trueperella pyogenes
Secondary
Usually come from rumen and enter portal circulation

25
Summer mastitis in cows
Trueperella pyogenes Normal inhabitant of the mucous membranes gets in from fly bites. In dry cows causing purulent secretion
26
Septic arthritis
Trueperella arthritis in swine. Get from uterus after farrowing
27
Pasteurella general features
Gram negative No growth MacKonkey Coccobacillus Facultative Resistant strains
28
Virulence of Pasteurella
LPS Neuraminidase Hyaluronidase Capsule Siderophores Exotoxin-> dermonecrotic
29
Fowl cholera
Pasteurella multocida An acute septicemic condition and can be chronic in recovered animal
30
Snuffles
Pasteurella multocida In rabbits, upper respiratory infections Septicemia, otitis, conjunctivitis often with Bordetella Fibrinous and suppurative
31
Human pasteurella
Infected from cat bites Leads to abscesses Pneumonia and bronchitis
32
Mannheimia general features
Hemolytic Red colonies on MacConkey Found on mucous membranes cattle and sheep
33
Virulence of Mannheimia
Endotoxin Neuraminidase Leukotoxin-cytotoxin Capsule Siderophores Iron regulated OMPs
34
Bovine Respiratory disease complex
Shipping fever Stress is predisposing factor Mannheimia haemolytica and Pasteurella multocidais part of complex
35
Mannheimia granulomatis
Causes granulomas in cows
36
Bacillus general features
Gram positive Rods Central spores Aerobic Thick capsule
37
Bacillus antracisvirulence
Type A most virulent Capsule Edema factor Lethal factor
38
Anthrax
Ingested or inhaled Sporulates inside of macrophages and carry to lymph nodes and into the blood Causes hemorrhage, shock, and edema See high fever and death. Blood leak from orifices Enlarged spleen and lymph nodes
39
Bacillus cereus
Attack injured tissue Causes mastitis, abscess, foodborne intoxication
40
Animals most susceptible to anthrax
Cattle, sheep, and goats Horses medium
41
Human anthrax forms
Cutaneous Gastrointestinal Inhalation Injection
42
New Duck Disease
Riemerella anatipestifer Infectious serositis of ducks and turkeys 1-8wks Airsacculitis, fibrinous pericarditis, perihepatitis, meningitis
43
Actinobacillus general features
Gram negative Cocco-bacilli pleomorphic rods Facultative Suppurative and necrotic
44
Actinobacillus virulence factors
Endotoxin Stress Hemolysin (A. pleuropneumoniae_ Capsuel ( A. pleuropneumoniae and A. suis) Siderophores (A. pleuropnumoniae and A. suis) Urease Adhesins Biofilms RTX toxin (A. Suis)
45
Wooden tongue
Actinobacillus lignieresii. Can get from trauma to mucous membrane or direct contact with infected animal. Affects soft tissues of the head and forms abscesses. Makes the tongue hard and prevents from eating and drinking. Can form abscesses in other soft tissue areas but not as common, see in cattle, sheep, dogs, horses get brain abscesses. Treat abscesse with iodide
46
Sleepy foal Disease
Actinobacillus equiili Acute septicemia accompanied by endocarditis and meningitis. See in horses
47
Actinobacillus suis
See in pigs causes septicemia, pneumonia, arthrits
48
Actinobacillus pleuropneumoniae
Serofibrinous pleuritis, fibrinous pneumonia, septicemia, arthritis, meningitis
49
Actinobacillus zoonosis
Get A. lingieresii and causes bronchopneumonia from bite wounds of horses and sheep

Bacteriology (29 decks)

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