What class is Corynebacterium?
How many species of Corynebacterium are there?
The genus Corynebacterium, which currently has more than 110 validated species, is highly diversified. It includes species that are of medical, veterinary, or biotechnological relevance (Bernard, 2012; Soares et al., 2013; Eikmanns and Blombach, 2014).
What does a Corynebacterium do?
Diphtheria is a serious infection caused by strains of bacteria called Corynebacterium diphtheriae that make toxin (poison). It can lead to difficulty breathing, heart failure, paralysis, and even death. CDC recommends vaccines for infants, children, teens, and adults to prevent diphtheria.
Is Corynebacterium aerobic or anaerobic?
The microbiologists use the term corynebacteria to describe aerobically growing, asporogenous, irregularly sharped gram-positive rods. They comprise strictly aerobic bacteria isolated from environment as well as preferentially anaerobic bacteria found in clinical specimens.
Is Corynebacterium Gram-positive or negative?
Corynebacterium diphtheriae is a Gram-positive nonmotile, club-shaped bacillus. Strains growing in tissue, or older cultures in vitro, contain thin spots in their cell walls that allow decolorization during the Gram stain and result in a Gram-variable reaction.
What is the size of Corynebacterium?
Corynebacterium are Gram-positive, slender, non-spore-forming rods. Some species may be slightly curved or have club ends. Cell dimension can be from 0.3 to 0.8 μm in diameter and 1.5 to 8.0 μm in length. Corynebacterium are facultatively anaerobic and catalase positive (Table 23.3).
Does Corynebacterium grow on blood agar?
C. diphtheriae grows well on blood agar, but tellurite blood agar (Hoyle’s medium) is recommended as this inhibits other respiratory flora and allows the characteristic colonial morphology of the three biotypes (gravis, intermedius and mitis) to develop.
Is Corynebacterium a contaminant?
Corynebacterium is a genus that can contaminate blood cultures and also cause severe infections like infective endocarditis (IE). Our purpose was to investigate microbiological and clinical features associated with contamination and true infection.
Is Corynebacterium a spore forming?
Corynebacterium spp., members of the family Corynebacteriaceae, are Gram-positive, non-spore- forming, non-motile, aerobic, pleomorphic rods with coccoid or club-shaped appearance that are catalase-positive and non-acid-fast (Boone et al., 2001; Greenwood, 2007).
What are Corynebacterium species?
The type species is Corynebacterium diphtheriae. A vernacular term used to refer to any member of the genus Corynebacterium. Any of various gram-positive, rod-shaped bacteria of the genus Corynebacterium, which includes many animal and plant pathogens, such as the causative agent of diphtheria.
Where does Corynebacterium come from?
Corynebacterium is a genus of bacteria that is very common in nature and can be found in soil, water, plants, animals, and humans. In humans, these bacteria are most commonly found in the skin and mucous membranes.
How to treat Corynebacterium UTI?
Antibiotics are the treatment of choice for nondiphtherial corynebacteria infections. Many species and groups are sensitive to various antibiotics, including penicillins, macrolide antibiotics, rifampin, and fluoroquinolones.
How do you catch diphtheria?
Diphtheria is a serious bacterial infection. You can catch it from a person who has the infection and coughs or sneezes. You can also get infected by coming in contact with an object, such as a toy, that has bacteria on it.