Moraxella spp.

Question 1

specifics

Answer 1

gram -ve pleomorphic rods
non motile
catalase and oxidase positive
obligate symbiotic, obligate pathogenic, resistant in environment

Question 2

M. bovis CS

Answer 2

pink eye - infectious keratoconjunctivitis (bovine)
highly infectious
young animals

Question 3

M. bovis

Answer 3

pathogenesis- attachment to eye –> toxin prod (tissue destruction)–> growth/more toxin (further damage)–> increase susceptibility –> irreversible eye damage
predisposing factor- young, eye irritation,herpes
transmission- direct contact with inf animal, flies

Question 4

M. bovoculi

Answer 4

keratoconjunctivitis in bovine

Question 5

M. ovis

Answer 5

kertaoconjunctivitis and pneumonia in ovine

Question 6

virulence factors M. bovis

Answer 6

cytotoxin, pore forming toxin

fimbrae, capsule, LPS