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Risk factors for Clostridium difficile infection

G E Bignardi1

  • 1Microbiology Department, Sunderland Royal Hospital, UK.

The Journal of Hospital Infection
|October 20, 1998
PubMed
Summary

Identifying Clostridium difficile infection risk factors is crucial. Antibiotic exposure significantly increases the risk of C. difficile diarrhea and carriage, with specific antibiotics posing higher threats.

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Area of Science:

  • Infectious Diseases
  • Epidemiology
  • Microbiology

Background:

  • Clostridium difficile infection (CDI) is a significant healthcare-associated pathogen.
  • Identifying modifiable risk factors is essential for prevention and control strategies.

Purpose of the Study:

  • To systematically review and identify risk factors associated with Clostridium difficile infection (CDI).
  • To differentiate risk factors for C. difficile diarrhea versus C. difficile carriage.

Main Methods:

  • Systematic literature review.
  • Qualitative assessment for most risk factors.
  • Meta-analysis and logistic regression for antibiotic exposure.

Main Results:

  • Significant risk factors for C. difficile diarrhea include increasing age, disease severity, gastrointestinal procedures, nasogastric tubes, anti-ulcer medications, ITU stay, prolonged hospitalization, and extended/multiple antibiotic courses.
  • Antibiotic exposure was strongly associated with both C. difficile diarrhea and carriage.
  • Meta-analysis allowed ranking of antibiotics by CDI risk, though confidence intervals were wide.

Conclusions:

  • Multiple factors beyond antibiotic use contribute to CDI risk.
  • Antibiotic stewardship, including selection of lower-risk agents, is vital for CDI prevention, especially in high-risk patients or outbreaks.

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