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Fusobacterium is a genus of obligate anaerobic, Gram-negative, [2] non-sporeforming bacteria [3] belonging to Gracilicutes. Individual cells are slender, rod-shaped bacilli with pointed ends. [ 4 ] [ 5 ] Fusobacterium was discovered in 1900 by Courmont and Cade and is common in the flora of humans.
F. necrophorum infection (also called F-throat [12]) usually responds to treatment with augmentin or metronidazole, but penicillin treatment for persistent pharyngitis appears anecdotally to have a higher relapse rate, although the reasons are unclear. [citation needed]
Rothia mucilaginosa is a Gram-positive, coagulase-negative, encapsulated, non-spore-forming and non-motile coccus, present in clusters, tetrads or pairs that is a part of the normal oropharyngeal flora. [3] Belonging to the family Micrococcaceae, it was first isolated from the mucous membrane of the cheek and gingiva. [4]
[9] [10] In humans, S. aureus is part of the normal microbiota present in the upper respiratory tract, [11] and on skin and in the gut mucosa. [12] S. aureus , along with similar species that can colonize and act symbiotically but can cause disease if they begin to take over the tissues they have colonized or invade other tissues, have been ...
They convert glucose to lactic acid and this acidic environment kills harmful pathogens. The vaginal microbiota in pregnancy varies markedly during the entire time of gestation. The species and diversity of the microorganisms may be related to the various levels of hormones during pregnancy. Vaginal flora can be transmitted to babies during birth.
It has been found to live in various wastes, hygiene chemicals, and soil. It also has some commercial significance; experiments using molasses as the substrate have produced hydrogen gas. K. aerogenes is an outstanding hydrogen producer.
A. haemolyticum is the cause of pharyngitis (sore throat) in up to 2.5% of cases. [8] In one study, it was the causative agent of pharyngitis in 1.4% of military conscripts. [9] It is rarely found in the skin or throat of healthy people, meaning it is not a member of the usual bacterial flora. [3]
Prevotella melaninogenica is a species of bacterium in the normal microbiota of the upper respiratory tract. It is an important human pathogen in various anaerobic infections, often mixed with other aerobic and anaerobic bacteria. [2] P. melaninogenica is an anaerobic, Gram-negative rod, named for its black colonies, and black pigment.