Exam 3: Moraxella Flashcards
What causes Pink eye in cattle
Moraxella bovis
VF of M. bovis
Fimbrae
Capsule
LPS
Exotoxins
What are the two exotoxins of M. bovis
Cytotoxin
Pore forming toxin
How is M bovis transmitted
direct contact
flies
Dx M. bovis
Immunofluoresencce
culture
pcr
How do you prevent M. bovis infection
- Fly control
- Dec. dust
- Vacc.
How do you tx M.bovis
Antibiotics
Cortico sterroids
What is the other pathogen that causes conjunctivitis in bovine
Mycoplasma bovoculi
Associtated with keratoconjunctivitis and pneumonia in sheep and cows
Mycoplasma ovis
What are the capsule types of Pasteurella multocida
A-E
What Capsule type of P. multocida is mucoid and contains hyaluronic acid
Type A
VF of P. multocida
- Adhesins
- Capsule
- Cell wall
- Fe acquisition
- Toxins
What is the importance of the capsule in P. multocida
- adherence
- anti-phagocytic
- anti- complement
What are the two toxins produced by pasteurella?
- RTX
2. Rho
What is the function of RTX toxin in P. mltocida
- leukotoxin
- impairs pulmonary macrophage
- inflam rxn with tissue destruction
What are the two strains of P. multocida
- High virulent strains
2. low virulent strains
P. multocida infection in rabbits
snuffles
what can P. multocida manifest into in rabbits
pleuropneumonia
otitis
conjunctivitis
abscesses
What does low pathogenic serovars of P. multocida cause in cattle
bronchopneumonia
What does high pathogenic serovars of P. multocida cause in cattle
Hemorrhagic septicaemia
What are the two serotypes of P. multocida in attle
B:2
E:2
T/F P. multocida has a low fatality rate in cattle
F. high mortality
How is P. multocida spread in cattle
tonsils of carriers
Tx. for P. multocida in cows
ABx dont work
What does P. multocida cause in pigs
Atrophic rhinitis
lung pasteurellosis
How is P. multocida spread in pigs
aerosol
Where do carriers of P. multocida in pigs carry the dz
nose
What is P. multocida infection in poultry called?
Fowl cholera
Who is most susceptible to Fowl cholera
Ducks
Where is P. multocida found in healthy animals
nose and beak
C/S of P. multocida in poultry
Sneezing
edema of head
how do dogs and cats get infection with P. multocida
Licking wounds
Bites
What pathogens can humans get from bite wounds
Pasteurella
Neisseria
Capnocytophaga
Bartonella henselae