31: Bordetella spp Flashcards
(40 cards)
Pathogenic strains
B. bronchiseptica
B. avium
B. parapertussis
Pneumonia in lambs
Ovine strains of B. parapertussis
Non pathogenic but may cause disease in turkeys
B. hinzii
Major animal pathogen
B. bronchiseptica
Affinity for
ciliated respiratory epithelium
Growth requirement
Non fastidious
Motility
Motile peritrichous bacteria except
B. parapertussis
Environment
Aerobic
Carbohydrate utilization
Cannot utilize, derive energy from oxidation of amino acids
MacConkey agar
Grows
Some lng sa B. parapertussis
Habitat
Upper respiratory tract
Survive prolonged periods in water
B. avium
B. avium requires differentiation from
Alcaligenes faecalis - non-pathogenic
Sheep blood agar:
Haemolytic
Non haemolytic
B. bronchiseptica
B. avium
Non lactose fermenting colonies in MacConkey agar
B. bronchiseptica
B. avium
Avirulent phase
Activation of virulent genes
25 degrees celcius
37 degrees celcius
For the expression of virulence
BvgAS locus
Lacks adenylate cyclase
B. avium
Has adenylate cyclase haemolysin
B. bronchiseptica
Structure of a repeats-structural-toxin
B. bronchiseptica
Haemagglutinin production
B. avium
Dermonecrotic toxin
Turbinate atrophy in pigs
B. bronchiseptica
Atrophic rhinitis
Pigs
B. bronchiseptica
Tracheobronchitis
Dogs
B. bronchiseptica