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Infectious disease. A staphylococcal infection or staph infection is an infection caused by members of the Staphylococcus genus of bacteria. These bacteria commonly inhabit the skin and nose where they are innocuous, but may enter the body through cuts or abrasions which may be nearly invisible. Once inside the body, the bacteria may spread to ...
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] The bacteria are usually harmless unless they are infected by a ...
Mucormycosis, also known as black fungus, [ 3][ 4] is a serious fungal infection that comes under fulminant fungal sinusitis, [ 11] usually in people who are immunocompromised. [ 9][ 12] It is curable only when diagnosed early. [ 11] Symptoms depend on where in the body the infection occurs. [ 13][ 14] It most commonly infects the nose, sinuses ...
Pathogenic bacteria. Neisseria gonorrhoeae (small red dots) in pus from a man with a urethral discharge ( Gram stain) Pathogenic bacteria are bacteria that can cause disease. [1] This article focuses on the bacteria that are pathogenic to humans. Most species of bacteria are harmless and are often beneficial but others can cause infectious ...
Mouth infections are most commonly caused by an overgrowth of bacteria that normally populate the oral cavity. [2] In a healthy adult, billions of bacteria, viruses, and fungi reside within the oral cavity and represent more than 500 different species. They are collectively known as the oral microbiome.
Noma (also known as gangrenous stomatitis or cancrum oris) is a rapidly progressive and often fatal gangrenous infection of the mouth and face. Noma usually begins as an ulcer on gums and rapidly spreads into the jawbone, cheek, and soft tissues of the face. This is followed by death of the facial tissues and fatal sepsis.
Oral microbiology. Thrush, a common condition caused by overgrowth of the fungus Candida albicans. Cases are characterized by growth of matted, yellow-white patches of fungus in the mouth. Oral microbiology is the study of the microorganisms (microbiota) of the oral cavity and their interactions between oral microorganisms or with the host. [1]
The human microbiome is the aggregate of all microbiota that reside on or within human tissues and biofluids along with the corresponding anatomical sites in which they reside, [ 1] including the gastrointestinal tract, skin, mammary glands, seminal fluid, uterus, ovarian follicles, lung, saliva, oral mucosa, conjunctiva, and the biliary tract.