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Bacteriology > Exam 5 > Flashcards

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
Q

Summer mastitis in cows

A

Trueperella pyogenes
Normal inhabitant of the mucous membranes gets in from fly bites. In dry cows causing purulent secretion

26
Q

Septic arthritis

A

Trueperella arthritis in swine. Get from uterus after farrowing

27
Q

Pasteurella general features

A

Gram negative
No growth MacKonkey
Coccobacillus
Facultative
Resistant strains

28
Q

Virulence of Pasteurella

A

LPS
Neuraminidase
Hyaluronidase
Capsule
Siderophores
Exotoxin-> dermonecrotic

29
Q

Fowl cholera

A

Pasteurella multocida
An acute septicemic condition and can be chronic in recovered animal

30
Q

Snuffles

A

Pasteurella multocida
In rabbits, upper respiratory infections
Septicemia, otitis, conjunctivitis often with Bordetella
Fibrinous and suppurative

31
Q

Human pasteurella

A

Infected from cat bites
Leads to abscesses
Pneumonia and bronchitis

32
Q

Mannheimia general features

A

Hemolytic
Red colonies on MacConkey
Found on mucous membranes cattle and sheep

33
Q

Virulence of Mannheimia

A

Endotoxin
Neuraminidase
Leukotoxin-cytotoxin
Capsule
Siderophores
Iron regulated OMPs

34
Q

Bovine Respiratory disease complex

A

Shipping fever
Stress is predisposing factor
Mannheimia haemolytica and Pasteurella multocidais part of complex

35
Q

Mannheimia granulomatis

A

Causes granulomas in cows

36
Q

Bacillus general features

A

Gram positive
Rods
Central spores
Aerobic
Thick capsule

37
Q

Bacillus antracisvirulence

A

Type A most virulent
Capsule
Edema factor
Lethal factor

38
Q

Anthrax

A

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
Q

Bacillus cereus

A

Attack injured tissue
Causes mastitis, abscess, foodborne intoxication

40
Q

Animals most susceptible to anthrax

A

Cattle, sheep, and goats
Horses medium

41
Q

Human anthrax forms

A

Cutaneous
Gastrointestinal
Inhalation
Injection

42
Q

New Duck Disease

A

Riemerella anatipestifer
Infectious serositis of ducks and turkeys 1-8wks
Airsacculitis, fibrinous pericarditis, perihepatitis, meningitis

43
Q

Actinobacillus general features

A

Gram negative
Cocco-bacilli pleomorphic rods
Facultative
Suppurative and necrotic

44
Q

Actinobacillus virulence factors

A

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
Q

Wooden tongue

A

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
Q

Sleepy foal Disease

A

Actinobacillus equiili
Acute septicemia accompanied by endocarditis and meningitis. See in horses

47
Q

Actinobacillus suis

A

See in pigs causes septicemia, pneumonia, arthrits

48
Q

Actinobacillus pleuropneumoniae

A

Serofibrinous pleuritis, fibrinous pneumonia, septicemia, arthritis, meningitis

49
Q

Actinobacillus zoonosis

A

Get A. lingieresii and causes bronchopneumonia from bite wounds of horses and sheep

Bacteriology (29 decks)

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