Pasteurellaceae Flashcards
1
Q
pasteurella characteristics
A
- small, gram negative rods/coccobacilli
- aerobic or facultatively anaerobic
- non-motile, non-spore forming
- ferment sucrose
- bipolar staining
2
Q
where is pasteurella multocida found
A
- upper respiratory tract of many animals
- 50% tonsils of normal dogs
- nasopharynx of healthy humans
3
Q
survival of p multocida in environment
A
- virulent in dried blood for 3 weeks
- survives in carcasses for 18 months
4
Q
wild vectors for p multocida
A
skunks, raccoons, wild fowl are vectors
5
Q
transmission of p multocida
A
airbone droplets, contaminated feed/water
6
Q
p multocida in mammals
A
- normal flora in oropharynx
- when resistance of animal is reduced, it is a secondary invader
7
Q
p multocida in birds
A
- healthy birds don’t carry it
- associated with acute or chronic disease
- significant economic loss
8
Q
hemorrhagic septicemia in cattle
A
- p multocida
- fever, dysentery, edema of throat and brisket
- high mortality
- blood stained fluid accumulation
- rare or non-existent in north america
9
Q
treatment and control of hemorrhagic seticemia
A
- antibiotics early
- vaccines available (bacterins, MLV)
- disinfect with 0.5% phenol!
10
Q
fowl cholera
A
- p multocida
- affects domestic poultry and wild birds
- healthy birds don’t carry it
- turkeys more susceptible
- swelling and edema, lameness, lung consolidation, high mortality
- environmental contamination (not egg transmitted)
11
Q
treatment and control of fowl cholera
A
- bacterins and live vaccines (in water)
- prevent contact with other animals
- continuous antibiotics
12
Q
snuffles/septicemia in rabbits
A
- p multocida
- snuffles: mild resp infection, exudate, rhinitis
- septicemia: fever, consolidated lungs, emaciation
- transmission through aerosol, fomites
- no vaccine –> prophylactic antibiotics
13
Q
atrophic rhinitis in pigs
A
- p multocida
- 3-8 weeks old
- sneezing, lacrimation, epistaxis
- turbinate bone destruction and snout deformities (to the side)
- dermonecrotic toxin D
14
Q
control of atrophic rhinitis
A
- antibiotics (in feed)
- husbandry improvements
- vaccines
15
Q
p multocida in dogs and cats
A
- common in mouth and throat of healthy animals
- doesn’t have important pathogenic role
- isolated from bite abscesses or cellulitis lesions
