Streptococcus anginosus Group of Bacteria as an Underappreciated Cause of Pneumonia - Takeaways - MDSpire

Streptococcus anginosus Group of Bacteria as an Underappreciated Cause of Pneumonia

  • By

  • Rebecca E Sell

  • Derek Juang

  • Paul Stark

  • Kathleen Jacobs

  • Alexandrea O Cronin

  • Sharon L Reed

  • Joshua Fierer

  • September 9, 2025

  • 0 min

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  • 1

    Streptococcus anginosus group (SAG) is increasingly recognized as a cause of empyema, yet often overlooked in community-acquired pneumonia (CAP).

  • 2

    A study identified 37 patients with SAG empyema, revealing that many had comorbidities predisposing them to aspiration and pneumonia.

  • 3

    The most common species causing SAG empyema was Streptococcus intermedius, often misdiagnosed as adjacent atelectasis.

  • 4

    Computed tomography scans showed that pneumonia was the source of empyema in patients previously misdiagnosed.

  • 5

    The study suggests that SAG organisms should be considered as potential pathogens in cases of community-acquired pneumonia.

Original Source(s)

Streptococcus anginosus Group of Bacteria as an Underappreciated Cause of Pneumonia

  • by Rebecca E Sell, Derek Juang, Paul Stark, Kathleen Jacobs, Alexandrea O Cronin, Sharon L Reed, Joshua Fierer

  • September 9, 2025

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