Corynebacterium equi

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Rho·do·coc·cus e·qui

a bacterial species causing bronchopneumonia and the formation of abscesses in the lungs of foals. It can cause bronchopneumonia in immunodeficient humans, especially those with AIDS.

Corynebacterium equi

Rhodococcus equi, see there.


a genus of bacteria of the family corynebacteriaceae. They are gram-positive and show a variety of morphologies. They are short, slightly curved rods, sometimes club-shaped. Likely to be grouped into angled and palisade arrays of cells. The type species is Corynebacterium diphtheriae, the cause of diphtheria in humans.

Corynebacterium bovis
a common inhabitant of the bovine udder but not considered to be a pathogen. May have importance in protecting the udder from more damaging pathogens.
Corynebacterium (previously Eubacterium, now Actinobaculum) cystitidis
causes contagious bovine pyelonephritis.
Corynebacterium equi
now called rhodococcus equi.
Corynebacterium kutscheri
causes systemic abscessation in rodents similar to caseous lymphadenitis in sheep. Previously called C. murium.
Corynebacterium minutissimum
found in wound infections in lambs.
Corynebacterium parvum
now called Propionibacterium acnes.
Corynebacterium pseudotuberculosis
cause of caseous lymphadenitis of sheep and goats, ulcerative lymphangitis, and canadian horsepox and pectoral abscesses of horses. Previously called C. ovis.
Corynebacterium pyogenes
(now called Arcanobacterium) pyogenes, previously Actinomyces pyogenes.
Corynebacterium rathayi
Corynebacterium renale
previously classified as types I, II and III, but now allocated separate names of C. renale, C. pilosum and C. cystitidis, respectively. Causes contagious bovine pyelonephritis, and balanoposthitis of bulls, and plays a large part in causing enzootic balanoposthitis in sheep.
Corynebacterium suis
recently called Eubacterium suis; now called Actinobaculum suis.
Corynebacterium ulcerans
a rare cause of subacute bovine mastitis, but a recognized risk for people who drink raw milk.
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