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A Data-Driven Approach to Quantifying Immune States in Sepsis
Published on: February 7, 2025
Microbiological patterns in sepsis: what happened in the last 20 years?
1Department of Pathology, University of Otago, P.O. Box 4345, Christchurch, New Zealand. david.murdoch@cdhb.govt.nz
Abstract:
Changes in the microbiological characteristics of sepsis have been observed over the past few decades. Infections caused by Gram-positive bacteria and fungi have become more common in some areas, possibly as a consequence of the increased use of intravascular and other medical devices, an increase in invasive procedures and the use of immunosuppressant agents. As observed with other infections there has been an emergence of multiresistant Gram-positive and Gram-negative pathogens. Most of the published data come from wealthy countries in temperate climates, and although many of the same changes have been observed in developing countries, there are important regional differences in the microbiology of sepsis. For example, typhoidal salmonellae remain the most important cause of bloodstream infection in parts of South Asia, nontyphoidal salmonella infections are predominant in parts of sub-Saharan Africa and melioidosis is important in endemic areas. The microbiological pattern of sepsis has also been influenced by the rise in prevalence of HIV infection in many regions.
Insights
Sepsis microbiology is shifting globally, with increased Gram-positive and fungal infections, and emerging multidrug-resistant pathogens. Regional variations and HIV prevalence significantly impact these evolving trends.
Area of Science:
- Infectious Diseases
- Microbiology
- Public Health
Background:
- Sepsis microbiology has evolved significantly over recent decades.
- Increased use of medical devices, invasive procedures, and immunosuppression contribute to shifts in infection types.
- Emergence of multidrug-resistant pathogens is a growing concern in sepsis cases.
Purpose of the Study:
- To analyze the changing microbiological landscape of sepsis globally.
- To identify regional variations in sepsis-causing pathogens.
- To understand the influence of factors like HIV on sepsis microbiology.
Main Methods:
- Review of published data on sepsis microbiology.
- Analysis of trends in pathogen prevalence.
- Comparison of microbiological patterns across different geographical regions.
Main Results:
- Gram-positive bacteria and fungi are increasingly implicated in sepsis.
- Multidrug-resistant Gram-positive and Gram-negative pathogens are emerging.
- Significant regional differences exist, with specific pathogens dominating in South Asia, sub-Saharan Africa, and endemic areas.
- HIV prevalence influences sepsis microbiology patterns in many regions.
Conclusions:
- Sepsis microbiology is dynamic and influenced by medical advancements and global health trends.
- Understanding regional variations is crucial for effective sepsis management.
- The rise of multidrug resistance and HIV necessitates adaptive strategies in combating sepsis.
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