Streptococcus anginosus group


Standard Precautions

General Information

  • Gram positive cocci in chains

  • Facultatively anaerobic

  • Variable hemolysis

  • Normal oral/GI flora.

  • Consists of S. anginosus, S. intermedius, and S. constellatus.

  • Previously known as S. milleri group.

  • Abscesses - head and neck, intra-abdominal, hepatic, cerebral, empyema

  • Bacteremia

  • Rarely endocarditis

  • When these organisms grow in blood culture, look for the abscess

  • Assess dentition

  • Generally abscesses need surgical drainage depending on size/location

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