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Moraxella catarrhalis is a fastidious, nonmotile, Gram-negative, aerobic, oxidase-positive diplococcus that can cause infections of the respiratory system, middle ear, eye, central nervous system, and joints of humans. It causes the infection of the host cell by sticking to the host cell using trimeric autotransporter adhesins.
It causes similar symptoms to Haemophilus influenzae, although it is much less virulent. Unlike Neisseria meningitidis, which is a morphological relative of M. catarrhalis, it hardly ever causes bacteremia or meningitis. Moraxella lacunata is one of the causes of blepharoconjunctivitis in human. [2]
The most common organisms which cause lobar pneumonia are Streptococcus pneumoniae, also called pneumococcus, Haemophilus influenzae and Moraxella catarrhalis. Mycobacterium tuberculosis, the tubercle bacillus, may also cause lobar pneumonia if pulmonary tuberculosis is not treated promptly.
Another cause of obstruction is lung cancer, which can block the flow of air. Lung disease - Patients with underlying lung disease are more likely to develop pneumonia. Diseases such as emphysema and habits such as smoking result in more frequent and more severe bouts of pneumonia.
Moraxella catarrhalis and Acinetobacter baumannii are human pathogens, and Moraxella bovis is the cause of "pinkeye" of cattle (infectious bovine keratoconjunctivitis). [ 1 ] References
It is commonly known as "walking pneumonia" because its symptoms are often mild enough that one can still be up and about. [18] [19] "Atypical pneumonia" is atypical in that it is caused by atypical organisms (other than Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis). [20]
The mystery surrounding the deaths of three American tourists found dead at a popular Bahamas resort has at last been resolved. Causes of death revealed for three American tourists found dead at ...
In a recent systematic review it was found there was no evidence to support their use. [7] Acute exacerbations of chronic bronchitis (AECB) are frequently due to non-infective causes along with viral ones. 50% of patients are colonised with Haemophilus influenzae, Streptococcus pneumoniae, or Moraxella catarrhalis. [8]