Toward an integrated genetic epidemiology of parasitic protozoa and other pathogens
1Centre d'Etudes sur le Polymorphisme des Microorganismes (CEPM), Centre IRD de Montpellier, France. Michel.Tibayrenc@cepm.mpl.ird.fr
Abstract:
Due to the increase of human migrations, the appearance of emerging and reemerging endemies, growing antibiotic resistance, and climatic changes, infectious diseases most probably constitute the major challenge for medicine in the next century. The advent of molecular methods of pathogen characterization has considerably improved our knowledge of the epidemiology of these diseases. However, the use of concepts of evolutionary genetics for interpreting "molecular epidemiology" data remains limited, although the application of such methods would broaden considerably the scope of this field of research, and allow epidemiologic and taxonomic approaches to be ascertained on a much firmer basis. In turn, pathogens, hosts, and vectors provide fascinating models for basic research. The artificial character of the border between "basic" and "applied" research is especially apparent with regard to the "integrated genetic epidemiology of infectious diseases" concept. The goal of this chapter is to evaluate the respective impact, on the transmission and pathogenicity of infectious diseases, of the host's, the pathogen's, and the vector's (for vector-borne diseases) genetic diversity, and the interactions between these three parameters (coevolution phenomena).
Insights
Infectious diseases pose a major medical challenge, exacerbated by migration and climate change. Integrating evolutionary genetics into molecular epidemiology can improve understanding of disease transmission and pathogenicity.
Area of Science:
- Evolutionary genetics
- Molecular epidemiology
- Infectious diseases
Background:
- Emerging infectious diseases are a growing global health concern due to factors like human migration, antibiotic resistance, and climate change.
- Molecular methods have advanced pathogen characterization, but integrating evolutionary genetics concepts is limited.
- Understanding host-pathogen-vector interactions is crucial for managing infectious diseases.
Purpose of the Study:
- To evaluate the impact of genetic diversity in hosts, pathogens, and vectors on infectious disease transmission and pathogenicity.
- To explore coevolutionary phenomena between hosts, pathogens, and vectors.
- To bridge basic and applied research in infectious disease epidemiology.
Main Methods:
- Application of evolutionary genetics concepts to molecular epidemiology data.
- Analysis of genetic diversity within pathogen, host, and vector populations.
- Investigating host-pathogen-vector interactions and coevolutionary dynamics.
Main Results:
- Limited current application of evolutionary genetics in molecular epidemiology.
- Potential for evolutionary genetics to enhance epidemiologic and taxonomic approaches.
- Genetic diversity and coevolution significantly influence disease transmission and pathogenicity.
Conclusions:
- Integrating evolutionary genetics with molecular epidemiology is essential for a comprehensive understanding of infectious diseases.
- Host, pathogen, and vector genetic diversity, along with their interactions, are critical factors in disease dynamics.
- This integrated approach strengthens both basic research and applied strategies for combating infectious diseases.
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