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In statistics, several tools are used to interpret the data. Measures of central tendency represent the characteristics of the data, such as mean, median, and mode. Additionally, measures of variance like standard deviation and range are used to find the spread of data from the mean. Relative standing measures the distance between data locations. Commonly used measures of relative standings are percentile, z score, and quartiles.
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Clostridium difficile-associated Diarrhea in Developing Countries: A Systematic Review and Meta-Analysis.

Daniel Curcio1, Alejandro Cané2, Francisco Andrés Fernández3

  • 1Vaccines Emerging Markets, Pfizer Inc, Buenos Aires, Argentina. Daniel.Curcio@pfizer.com.

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PubMed
Summary

The global prevalence of Clostridium difficile infection in diarrhea patients is 15%. This figure is likely underestimated in developing nations due to limited resources and awareness.

Keywords:
C. difficile-associated diarrheaClostridium difficile infectionDeveloping countriesNosocomial diarrhea

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Area of Science:

  • Infectious Diseases
  • Epidemiology
  • Public Health

Background:

  • Clostridium difficile infection (CDI) is a growing global health concern.
  • Estimating CDI prevalence in developing countries is challenging due to limited surveillance and diagnostic capabilities.
  • Diarrhea is a primary symptom of CDI, necessitating focused research in affected regions.

Purpose of the Study:

  • To systematically review and analyze the prevalence and incidence of Clostridium difficile infection (CDI) in patients presenting with diarrhea in developing countries.
  • To determine current prevalence and incidence density rates of first CDI episodes in specific developing regions.
  • To highlight the impact of limited resources on CDI data collection.

Main Methods:

  • Systematic literature search of MEDLINE/PubMed, Scopus, and LILACS databases.
  • Analysis of studies reporting prevalence or incidence rates of C. difficile-associated diarrhea.
  • Inclusion of data from Africa-Middle East, developing Asia, Latin America, and China.
  • Stratification of data to compare community versus hospitalized patients.

Main Results:

  • The overall prevalence of CDI in patients with diarrhea was 15% (95% CI 13-17%).
  • Incidence density was 8.5 per 10,000 patient-days (95% CI 5.83-12.46) across 17 studies.
  • Prevalence was significantly higher in hospitalized patients compared to community patients (p=0.0227).

Conclusions:

  • The 15% prevalence of CDI in diarrhea patients is a significant concern, likely underestimated in developing countries.
  • Low awareness and inconsistent diagnostic/surveillance protocols contribute to underestimation.
  • Enhanced awareness, improved infection control, and robust surveillance are crucial to reduce CDI burden in developing nations.