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Atypical bacteria are bacteria that do not get colored by gram-staining but rather remain colorless: they are neither Gram-positive nor Gram-negative. These include the Chlamydiaceae , Legionella and the Mycoplasmataceae (including mycoplasma and ureaplasma ); the Spirochetes and Rickettsiaceae are also often considered atypical.
Mycobacterium avium-intracellulare infection (MAI) is an atypical mycobacterial infection, i.e. one with nontuberculous mycobacteria or NTM, caused by Mycobacterium avium complex (MAC), which is made of two Mycobacterium species, M. avium and M. intracellulare. [1]
In literature the term atypical pneumonia is current, sometimes contrasted with viral pneumonia (see above) and sometimes, though incorrectly, with bacterial pneumonia. Many of the organisms causative of atypical pneumonia are unusual types of bacteria (Mycoplasma is a type of bacteria without a cell wall and Chlamydias are intracellular ...
Nontuberculous mycobacteria (NTM), also known as environmental mycobacteria, atypical mycobacteria [1] and mycobacteria other than tuberculosis (MOTT), are mycobacteria which do not cause tuberculosis or leprosy/Hansen's disease. NTM are able to cause pulmonary diseases that resemble tuberculosis. [2]
The infection caused by this bacterium is called atypical pneumonia because of its protracted course and lack of sputum production and wealth of non-pulmonary symptoms. Chronic Mycoplasma infections have been implicated in the pathogenesis of rheumatoid arthritis and other rheumatological diseases.
The percentage of children ages 2-4 diagnosed with a respiratory illness-bacteria grew from 1% to 7.2% between March 31 and Oct ... also known as "atypical pneumonia," according to the Cleveland ...
Mycoplasma pneumoniae is a species of very small-cell bacteria that lack a cell wall, in the class Mollicutes. M. pneumoniae is a human pathogen that causes the disease Mycoplasma pneumonia, a form of atypical bacterial pneumonia related to cold agglutinin disease.
Atypical bacteria causing pneumonia are Coxiella burnetii, Chlamydophila pneumoniae (), Mycoplasma pneumoniae (), and Legionella pneumophila.. The term "atypical" does not relate to how commonly these organisms cause pneumonia, how well it responds to common antibiotics or how typical the symptoms are; it refers instead to the fact that these organisms have atypical or absent cell wall ...