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43 Cards in this Set

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Klebsiella are commensal opportunists T/F
T
A prominent hyper-mucoid capsule contributes to Klebsiella's virulence T/F
T complement, phagocy evasion
The capsule of klebsiella targets epithelial cells where
urinary n respiratory tracts
the endotoxin Lipid A causes what pathologies?
fever, neutropenia, petechia, shock
Klebsiella enterotoxin is similar to E coli ____ toxin
stable toxin (ST) - causes fluid loss from epithelial cells
Case fatality from bovine mastitis by Klebsiella is as high as

Environmental factors for transmission
80%

moist bedding, trauma from malfunctioning milking machine
Apart from vaginitis, Klebsiella can cause what in equines?

How is it transmitted?
infertility, metritis, abortion

stallions, fomites, vaginal speculum
What is navel ill in equines?
septicemia, septic arthritis
pneumonia
pyelonephritis (renal pelvis)
productive omphalitits (pus from navel)

common with failed passive transfer of Ab
Klebsiella in dogs cause
pyometra, cystitis, prostatitis, enteritis, mastitis
pneumonia
meningoencephalitis
hepatic abscessation
Klebsiella in pet birds cause

In reptiles?

In humans?
respiratory infections
septicemia
diarrhea

pneumonia, hypopyon (pus inside eye)

UTI (nosocomial)
klebsiella hyper-mucoid capsule causes virulence in Green Vervets how?
resistant to oxidative killing
adherence, uptake, survival inside, and killing of monocytes
This species of Pasteurella causes septicemia and pneumonia in sheep.
Bibersteinia trehalosi
P. multocida causes pneumonia in these animals
ruminants
swine
lab animals
T/F Mannheimia hemolytica causes septicemia and pneumonia in cattle
F, not septicemia
Name 1 type of adhesin and 3 capsule proteins found in host tissues expressed by Pasteurella/Mannheimia.
fibrinogen-binding proteins (protect against C and Abs)

hyaluronic acid
heparin
chondroitin
Name 2 siderophores of Pasteurella/Mannheimia
Multicidin in P. multocida

OMP - binds to transferrin, heme, hemoglobin
Leukotoxin, an RTX toxin, is produced by what species?

What does it cause?
M. hemolytica, B. trehalosi

kills WBCs, RBCs
drives a tissue destructive inflamm response (tox granules, cytokines)
Dermonecrotizing toxin of P. multocida type D responsible for atrophic rhinitis in swine
PMT (a Rho-activating toxin -> incr intracellular Ca)
Probably role of the Pasteurella/Mannheimia hyaluronidase, neuraminidase toxins
aid in colonisation
Why are Pasteurella/Mannheimia so resistant?
P. multocida survives for mos in bird carcasses
R plasmid
They have multiple capsular and somatic serotypes
What are ways of transmission for Pasteurella/Mannheimia?
inhalation, ingestion, bites, scratchwounds (e.g. if animal had licked paws)

endogenous infection
Where are endogenous Pasteurella/Mannheimia found?
mucous membranes in oropharyngeal region
What are the 3 general pathogenic manifestations of Pasteurella/Mannheimia?
respiratory tract
septicemia
trauma associated
Give examples of respiratory pathology in swine and cattle for Pasteurella/Mannheimia
Cattle: commensal bact from URT infect lungs -> pneumonia -> intense inflam response (MØ, NØ, fibin deposition, RBCs) due to leukotoxin, LPS, iron-scavening prots -> red/pink/grey with abscess formation

Swine: PMT destroys nasal tissue
chronic rhinitis (disturbed osteogenesis)
Give examples of septicemic pathology in ruminant and avian for Pasteurella/Mannheimia
Pasteurella species: capsule, OMP, iron-scavening prot -> endotoxemia

Cattle: hemorr septicemia
Sheep: septicemia
Avian: cholera
Give examples of trauma associated pathology for Pasteurella/Mannheimia
Mouth bacteria associated (Pasteurella)
bite wounds
licking wounds

NØ involvement
What's shipping fever?
extremely important diseases accounting for 30% of cattle deaths worldwide

fibrinous pleuropneumonia or bronchopneumonia by M. hemolytica mainly, also P. multocida

caused by stress, concurrent infections etc

1-2 wks after stress -> fever, nasal discharge, cough, death
Hemorrhagic septicemia (by P. multocida) in cattle is common in the tropics. Give some causes and symptoms.
drastic weather changes, malnutrition, overcrowding

fever, subq edema, hypersalivation, diarrhea, sudden death
Mastitis in cattle (M. hemolytica mainly, also P. multocida) has high mortality and is characterized by
severe necrosis
hemorrhages
systemic implications
Mastitis in ovine/caprine (M. hemolytica, B. trehalosis) has high mortality and is characterized by
necrosis (blue bag) that may slough, usually in late lactation

acute systemic rxn
Septicemia in lambs is caused by M. hemolytica and B. trehalosis and resembles
bovine hemorrhagic septicemia
What disease in sheep resembles bovine shipping fever commonly presenting with nasal mucus discharge and lung necrosis with bloody, purulent secretions?
enzootic pneumonia by M. hemolytica
Chronic atrophic rhinitis with secondary fibrous pneumonia in swine is caused by which 2 bact?

Affects pigs younger than
Bordetella bronchoseptica (mainly) and Pasteruella multocida

7 mos
What are the most important bact diseases in rabbits?

What can it cause?

What can trigger?
respiratory aka "snuffles" (P. multocida)

mucopurulent rhinosinusitis
sometimes conjunctivitis, metritis, otitis media, neurologic, abscesses in lungs and skin

pregnancy, lactation, stress
Orchitis, balanoposthitis, and pyometra are genital diseases that are caused by ________ in rabbits
Pasteurella multocida
How is fowl cholera (turkey, chicken, waterfowl) transmitted?
by ingestion or inhalation of P. multocida
What are the differences b/w per-acute, acute, sub-acute, and chronic fowl cholera?
per-acute: 60% mortality, few signs
acute: 30% mort, anorexia, sluggish, nasal/ocular discharge, diarrhea
sub-acute: respiratory, mucopurulent nasal discharge
chronic: suppurative and caseous lesions in various places
What can Pasteurella cause in dogs and cats?
mouth-related conditions (infected wounds, foreign bodies)
Equine respiratory infection with P. caballi is usually associated with
Streptoc equi
What dz does P. multocida cause in rodents and humans?

How transmission to humans?
opportunistic pneumonia in rodents
local (skin) or generalized such as respiratory

bites scratches
What vaccines are available for Pasteurella/Mannheimia prevention?
bovine hemorrh septicemia vaccine - effective
avian - inconsistent
swine - effective bacterins containing toxoid for atrophic rhinitis
What is a biochemical difference b/w Pasteurella and Mannheimia?
Pasteurella ferment D-mannose, Mannheimia do not
T/F V factor-dependent Pasteurella grows better on chocolate agar
T