Aspiration pneumonia bacterial infection causes

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Editor(s)-in-Chief: C. Michael Gibson, M.S., M.D. [1] Phone:617-632-7753; Associate Editor(s)-In-Chief: Priyamvada Singh, M.D. [2]

Causes

• Normal flora of upper airways, gingival cavity or stomach.
• Caused by less virulent bacteria, such as aerobic or microaerophilic streptococci (commonest) and anaerobes (second common cause) such as
  • Peptostreptococcus
  • Fusobacterium nucleatum
  • Prevotella
  • Bacteroides