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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 ...
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]
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 ...
Mouth infections, also known as oral infections, are a group of infections that occur around the oral cavity. They include dental infection, dental abscess, and Ludwig's angina. [1] Mouth infections typically originate from dental caries at the root of molars and premolars that spread to adjacent structures.
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]
Catarrh. Catarrh ( / kəˈtɑːr /) is an inflammation of mucous membranes in one of the airways or cavities of the body, [ 1][ 2] usually with reference to the throat and paranasal sinuses. It can result in a thick exudate of mucus and white blood cells caused by the swelling of the mucous membranes in the head in response to an infection.
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 ...