Corynebacterium

Question 1

characteristics of corynebacterium

Answer 1

• part of the normal microbiota
• gram-positive clubbed rods
• Chinese letter variable morphology
• aerobic and facultatively anaerobic
• survives long in the environment
• level 2

Question 2

virulence of corynebacterium

Answer 2

pili, urease, phospholipase D, Diptheria toxin

Question 3

C. pseudotuberculosis

Answer 3

host: goat, sheep, camel
dz: caseous lymphadenitis
control: difficult to eradicate from flocks
- antimicrobials don’t penetrate into abscesses
- zoonotic
mastitis in cattle

Question 4

C. renale cattle

Answer 4

host: cattle
dz: pyelonephritis cystitis
- generally not systemically sick
- proteinuria, hematouria
- transmitted by urine droplets onto vulva
control: isolate, difficult to eradicate, acidify urine
treatment: penicillin, cull if renal damage

Question 5

C. renale pigs

Answer 5

dz: kidney abscesses

Question 6

C. renale sheep

Answer 6

host: male sheep
dz: balanoposthitis (pizzle rot)
- inflammation of penis/prepuce
- risk factor = high protein diet
- scarring may prevent penile extrusion
treatment: penicillin

Question 7

C. cystitidus

Answer 7

host: cattle
dz: cystitis, pyelonephritis

Question 8

C. pilosum

Answer 8

cattle

dz: cystitis, pyelonephritis

Question 9

C. diptheria

Answer 9

humans

Question 10

C. auriscanis, C. ulcerans

Answer 10

host: dog, cat
dz: otitis externa, pyoderma
causes polymicrobial infections
treatment is challenging

Question 11

C. urealyticum

Answer 11

host: dog and cat
dz: UTI