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Following in Real Time the Impact of Pneumococcal Virulence Factors in an Acute Mouse Pneumonia Model Using Bioluminescent Bacteria
11:32

Following in Real Time the Impact of Pneumococcal Virulence Factors in an Acute Mouse Pneumonia Model Using Bioluminescent Bacteria

Published on: February 23, 2014

[Bacterial agents of hospital infections]

F Daschner

    Immunitat Und Infektion
    |June 1, 1984
    PubMed

    Insights

    The spectrum of hospital-acquired infections is shifting, with formerly rare pathogens like Legionella pneumophila and Clostridium difficile becoming more prevalent, especially in vulnerable patients. Antibiotic use and invasive procedures contribute to these changes in microbial threats.

    Area of Science:

    • Microbiology
    • Infectious Diseases
    • Hospital Epidemiology

    Context:

    • Changing landscape of nosocomial (hospital-acquired) infections over recent decades.
    • Shift from common pathogens like Group A Streptococci to opportunistic and previously apathogenic bacteria.
    • Increased prevalence of severe infections in immunocompromised patient populations.

    Purpose:

    • To highlight the evolving spectrum of microorganisms causing nosocomial infections.
    • To identify key emerging pathogens and their associated risk factors.
    • To underscore the clinical significance of these shifts in patient care.

    Summary:

    • Nosocomial infections are increasingly caused by "new" organisms, including Legionella pneumophila and Clostridium difficile, particularly in immunocompromised individuals.
    • Clostridium difficile is found in 6-48% of patients on antibiotics and asymptomatically in up to 36% of hospitalized patients.
    • Acinetobacter species account for 1-3% of all nosocomial infections, with changes attributed to antibiotic selection and increased invasive procedures.

    Impact:

    • Recognizing these shifts is crucial for effective infection control and treatment strategies.
    • Highlights the need for vigilance against emerging pathogens in healthcare settings.
    • Informs clinical practice regarding diagnosis and management of hospital-acquired infections.

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