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Flashcards in Moraxella Deck (18):
1

Moraxella are ____ gram negative rods that are catalase and oxidase ____

pleomorphic 

positive 

2

What species of Moraxella is most important?

Moraxella Bovis

3

What does Moraxella Bovis cause in Cows?

infectious bovine keratoconjunctivitis 

A image thumb
4

Is eye infection is cows infectious?

Highly infectious

easily transmitted from one cow to the next 

5

What is necessary for virulence in Moraxella?

Cytotoxin and Fimbriae

6

Fimbria help with what in Moraxella?

adherance to the conjunctival and corneal cells 

7

Moraxella lacks a ____ but still acts like normal LPS

O repeat unit

8

What is the main toxin in Moraxella bovis?

Moraxella bovis toxin

*cytotoxin causes beta hemolysis on blood agar 

9

True/False: Morexlla is resistant to antibiotics

False

susceptible to antibiotics 

10

non ____ variants are nonpathogenic 

hemolytic

11

What exacerbates the condition in Moraxella?

Ultraviolet irradiation

flies

co infections- Bovine herpes, adenovirus, mycoplasma ect. 

12

Infectious Bovine Keratoconjunctivits causes what in cows?

epiphora- tears

edema

ulceration

panophthalmitis

*if not taken care of this disease can progress and allow other opporunistic infections to occur

13

Moraxella conjunctivitis takes a long time to heal and looks similar to ____

pink eye 

14

what can you see in advanced cases of Conjunctivits in cows?

chronic purulent and ulcerative keratitis 

A image thumb
15

Who is more predisposed for Moraxella infection?

young animals 

beef cattle are more susceptible 

animals that lack eyelid pigmentation 

16

Which antibody is more prevalent with Moraxella?

IgA

mucosal surface of eye 

17

Virulent Moraxella bovis are ____ and ____

fimbriated and hemolytic 

18

Treatment for Moraxella?

Remove cows from areas that could cause them to get dust and flies in their eyes

give antimicrobial drugs