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Corynebacterium species occur commonly in nature in soil, water, plants, and food products. [3] [16] The non-diphtheroid Corynebacterium species can even be found in the mucosa and normal skin flora of humans and animals. [3] [16] Unusual habitats, such as the preen gland of birds, have been recently reported for Corynebacterium uropygiale. [19]
Corynebacterium diphtheriae [a] is a Gram-positive pathogenic bacterium that causes diphtheria. [2] It is also known as the Klebs–Löffler bacillus because it was discovered in 1884 by German bacteriologists Edwin Klebs (1834–1912) and Friedrich Löffler (1852–1915). [ 3 ]
Diphtheria is an infection caused by the bacterium Corynebacterium diphtheriae. [2] Most infections are asymptomatic or have a mild clinical course, but in some outbreaks, the mortality rate approaches 10%. [1] Signs and symptoms may vary from mild to severe, [1] and usually start two to five days after exposure. [2]
Staphylococcus and Corynebacterium were among the most common types of bacteria found in the navels of this project's volunteers and these types of bacteria have been found to be the most common types of bacteria found on the human skin in larger studies of the skin microbiome [18] (of which the Belly Button Biodiversity Project is a part). [10]
Corynebacterium xerosis; D. Diphtheroid This page was last edited on 2 July 2023, at 09:24 (UTC). Text is available under the Creative Commons ...
Corynebacterium endocarditis usually infects the left side of the heart in males, though C. amycolatum has shown a predilection for women. [4] While cases of disease have been small in number, this underreporting could be due to misdiagnosis of C. amycolatum as C. xerosis , which is a known human pathogen.
Appearance of C. xerosis colonies on blood agar. Corynebacterium xerosis is a gram-positive, rod-shaped bacterium in the genus Corynebacterium.Although it is frequently a harmless commensal organism living on the skin and in the mucous membranes, C. xerosis is also a clinically relevant opportunistic pathogen that has been attributed to many different infections in animals and humans.
C. diphtheriae is the causative agent of classical diphtheria, and C. ulcerans has been found to carry the same gene that codes for the diphtheria toxin. [2] After swabbing lesions on a 53-year-old woman in Germany who experienced swelling of her pharynx and who developed a whitish pseudomembrane, doctors were able to grow C. ulcerans. [2]