Where does Corynebacterium pseudotuberculosis come from?

Corynebacterium pseudotuberculosis is a gram-positive, soil-dwelling bacterium. Infection occurs worldwide and is increasing in frequency in North America. In horses, external abscesses involving the ventral abdomen and pectoral region are the most common presentation (“pigeon fever”).

What kills Corynebacterium pseudotuberculosis?

Specifically, C. pseudotuberculosis is intrinsically resistant to streptomycin, with varying resistance to penicillin and neomycin depending on the strain. It has been shown to be susceptible to ampicillin, gentamicin, tetracycline, lincomycin, and chloramphenicol.

Is Corynebacterium pseudotuberculosis Gram-positive or negative?

19.28 Corynebacterium pseudotuberculosis Corynebacterium pseudotuberculosis is a Gram-positive rod-shaped, intracellular, facultative anaerobic bacterium with worldwide distribution.

Is Caseous lymphadenitis zoonotic?

Caseous Lymphadenitis (CL) is a highly contagious disease of goats and sheep caused by a bacterium called Corynebacterium pseudotuberculosis (C. pseudotuberculosis). This potentially zoonotic pathogen occurs worldwide and has also been reported in horses, cattle, llamas, alpacas and buffalo (Fontaine and Baird, 2008).

What bacteria causes lymphangitis?

Lymphangitis most often results from an acute streptococcal infection of the skin. Less often, it is caused by a staphylococcal infection. The infection causes the lymph vessels to become inflamed. Lymphangitis may be a sign that a skin infection is getting worse.

How did my goat get CL?

Goats become infected when the bacteria enters through an open wound or mucous membranes (e.g. eyes, nose, and mouth). Swollen lymph nodes are typically not detectable for two to six months after initial infection.

What is Corynebacterium pseudotuberculosis in goats?

C pseudotuberculosis is a gram-positive, facultative, intracellular coccobacillus. Two biotypes have been identified based on the ability of the bacteria to reduce nitrate: a nitrate-negative group that infects sheep and goats, and a nitrate-positive group that infects horses.

Is Corynebacterium pseudotuberculosis zoonotic?

Further, because of its zoonotic potential, C. pseudotuberculosis infection of animals can contaminate meat and milk, putting consumers at risk. The ability of C. pseudotuberculosis to infect both animals and humans makes studies on prevention and diagnosis of this pathogen important.

Can humans get CL?

Prevalent on all continents throughout the world, CL causes ulcerative lymphadenitis in horses and superficial abscesses in bovines, swine, rabbits, deer, laboratory animals, and humans.

Is Corynebacterium pseudotuberculosis Gram positive or negative?

Definition Corynebacterium pseudotuberculosis is a gram-positive bacteria with worldwide distribution. In North America, cases have been reported throughout the United States. Infection has been reported in equids, sheep, goats, cattle, buffalo, camelids, and rarely humans.

What is the etiology of C Corynebacterium pseudotuberculosis (caseous lymphadenitis)?

Corynebacterium pseudotuberculosis Infection (Caseous Lymphadenitis) Etiology. Corynebacterium pseudotuberculosis (previously C. ovis) are nonmotile, non-spore-forming, aerobic, short and curved, gram-positive coccobacilli.

What are the different types of corynebacteria pathogens?

The best known pathogen in the group of Corynebacteria is toxigenic C. diphtheriae and C. ulcerans and C. pseudotuberculosis are two other potentially toxigenic species. The three species are able to produce diphtheria toxin—the major virulence factor—and cause serious, potentially fatal disease in humans called diphtheria.

How fast does Corynebacterium pseudotuberculosis grow on blood agar?

Corynebacterium pseudotuberculosis grows well at 36°C on blood agar in 24 to 48 hours, and it forms small, pinpoint in diameter, whitish, opaque colonies that are surrounded by a weak zone of hemolysis.