Dermatophilus Congolensis

Question 1

What is the oxygen requirement for Dermatophilus congolensis?

Answer 1

Aerobic

Question 2

What is the characteristic appearance assoc. with D. Congolensis?

Answer 2

“Tram track” appearance

Question 3

Where does D. congolensis typically reside on a host?

Answer 3

On the skin

Question 4

What species can D. congolensis infect?

Answer 4

Cattle** , sheep, goats, and horses (more typically)

Question 5

What pathogenesis is most assoc. with D. Congolensis?

Answer 5

Epidermal abscess with Hyperkeratosis*

Question 6

What is the major virulence factor of D. congolensis?

Answer 6

Keratinolytic activity

Less important: chemotaxis of zoospores, and survival of zoospores in dry-scab crusts

Question 7

Which diseases are associated with D. Congolensis? (3)

Answer 7

Dermatophilosis
Rain Scald
Dermatophilosis in Chelonids (sea turtles)

Question 8

How to diagnose D. congolensis infection?

Answer 8

Tram track organization of scabs OR PCR

Question 9

Which antibiotics is D. congolensis susceptible to?

Answer 9

Penicillin G and Tetracycline

Question 10

Which disease can be found on St. Kitts?

Answer 10

Dermatophilus congolensis - in cattle (picture from lecture)