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Infectious Diarrhea in Early Childhood across the Global South: Etiologic Diversity and Pathogenic Mechanisms
Dharitri Chaudhuri1, Dipro Mukherjee1, Avinash R Shenoy2
1Department of Developmental Biology & Genetics, Indian Institute of Science, Bengaluru 560012, India.
Insights
Diarrhea remains a major killer of young children globally, especially in low- and middle-income countries (LMICs). This review explores pathogen mechanisms to guide new vaccine and therapeutic development.
Area of Science:
- Microbiology
- Infectious Diseases
- Public Health
Background:
- Diarrhea is a leading cause of mortality in children under five, particularly in LMICs.
- Poor hygiene, sanitation, and water access exacerbate diarrhea incidence.
- Enteropathogens like bacteria, viruses, and protozoa cause diarrhea, with limited vaccine options and rising antimicrobial resistance.
Purpose of the Study:
- To review the pathogenesis mechanisms of enteropathogens causing diarrhea in the Global South.
- To identify targets for novel therapeutics and vaccines.
Main Methods:
- Literature review of distinct and overlapping enteropathogen pathogenesis.
- Analysis of mechanisms relevant to LMIC contexts.
Main Results:
- Enteropathogens utilize diverse mechanisms to cause diarrhea.
- Understanding these mechanisms is crucial for intervention development.
Conclusions:
- There is a need for effective vaccines and therapeutics against common enteropathogens.
- Exploiting pathogen-specific mechanisms can lead to new treatment and prevention strategies.
Abstract:
Globally, diarrhea is the third leading cause of death in children below the age of five and is an acute problem in low- and middle-income countries (LMICs), where there is inadequate hygiene, poor sanitation, and a lack of access to clean drinking water. Infectious agents, such as bacteria, viruses, and protozoa, are primarily responsible for causing diarrhea. Despite significant progress in research over the past few decades, there are no licensed vaccines for most of these pathogens. Further, the growing problem of antimicrobial resistance has complicated treatment options. In this review, we provide an overview of the distinct yet often overlapping pathogenesis mechanisms employed by the diverse enteropathogens prevalent in the Global South. Future research should aim to exploit these mechanisms for the design of effective therapeutics and vaccines.
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