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Pneumonia I: Introduction

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Pneumonia is an acute respiratory infection that targets the lungs, specifically the alveoli. These tiny air sacs, essential for oxygen exchange, become engorged with pus and fluid, severely hindering breathing, decreasing oxygen absorption, and causing significant pain and discomfort during respiration.
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Following in Real Time the Impact of Pneumococcal Virulence Factors in an Acute Mouse Pneumonia Model Using Bioluminescent Bacteria
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Persistent Gram-negative Bloodstream Infection Increases the Risk of Recurrent Bloodstream Infection With the Same

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Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America
|February 17, 2024
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Persistent gram-negative bloodstream infections (GN-BSI) are linked to higher rates of recurrence with the same bacteria. This suggests persistent GN-BSI may indicate a more complex infection requiring further investigation.

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Area of Science:

  • Infectious Diseases
  • Clinical Microbiology

Background:

  • Gram-negative bloodstream infections (GN-BSI) are a significant cause of morbidity and mortality.
  • The clinical implications of persistent GN-BSI, defined as ongoing positive cultures, remain understudied.

Purpose of the Study:

  • To investigate the association between persistent GN-BSI and recurrent GN-BSI.
  • To determine if persistent GN-BSI is a marker for complicated infections.

Main Methods:

  • Retrospective analysis of 992 adult patients with GN-BSI.
  • Comparison of recurrence rates between patients with and without persistent GN-BSI.

Main Results:

  • Persistent GN-BSI was significantly associated with an increased risk of recurrent GN-BSI caused by the same bacterial species and strain (6% vs 2%; P = .04).

Conclusions:

  • Persistent GN-BSI may serve as a clinical marker for complicated gram-negative bloodstream infections.
  • Identifying persistent GN-BSI could aid in risk stratification and management of patients.