Corynebacterium

Question 1

One of the diseases caused by C. pseudotuberculosis

Answer 1

Ulcerative Lymphangitis (ulg)

Question 2

ULG infects which animals?

Answer 2

equines (contagious)

Question 3

Clinical signs of ULG

Answer 3

Inflammation of subcutaneous lymphangitis vessels, formation of nodules, abscesses and ulcers.
Lymphatic becomes corded (harden).
May cause abortion, pyelonephritis and mastitis in equine.

Question 4

Signs confined to which part of the body?

Answer 4

Distal portions of limbs, particularly hindlimbs

Question 5

Causes/sources of infection

Answer 5

Poor management, where common in horses picketed together on muddy standings, where they are subject to kicks, shackle chafes and other injuries

Contaminated liter and grooming utensils as fomites

Flies as mechanical vectors

Question 6

Progression of the lesion

Answer 6

Lesion are painful, progress from papules to pustules, eventually rupture, exude pus and become encrusted,

Disease may persist for weeks to months

Question 7

Control of ULG

Answer 7

Isolate cases
Dispose soiled dressings carefully, general hygiene and good stable management including manure disposal, fly control and wound preventation
Standings should be kept dry

Question 8

In other animals such as cattle, deer and camels, cause what?

Answer 8

abscesses and suppurative infections