[Gram-negative coccus infection].
The main pathogens of gram-negative infections are Neisseria gonorrhoeae, Neisseria meningitidis and Moraxella catarrhalis infection. N. Gonorrhoeae infection is one of the STD, but the chemotherapy for this infection is very easy because this pathogen is very susceptible to new quinolones. Meningococcal infection is very rare in Japan. Since 1980, M. catarrhalis is one of the important pathogen of respiratory infections such as acute bronchitis, pneumonia, chronic bronchitis. This pathogen also causes acute sinusitis and otitis. Most pathogenic strains of M. catarrhalis are beta-lactamase producing.
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