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Updated: Mar 31, 2026

Identification of Rare Bacterial Pathogens by 16S rRNA Gene Sequencing and MALDI-TOF MS
Published on: July 11, 2016
Emerging bacterial pathogens: the past and beyond
1Center for Research on Intracellular Bacteria, Institute of Microbiology, Faculty of Biology and Medicine, University of Lausanne and University Hospital, Lausanne, Switzerland.
Abstract:
Since the 1950s, medical communities have been facing with emerging and reemerging infectious diseases, and emerging pathogens are now considered to be a major microbiologic public health threat. In this review, we focus on bacterial emerging diseases and explore factors involved in their emergence as well as future challenges. We identified 26 major emerging and reemerging infectious diseases of bacterial origin; most of them originated either from an animal and are considered to be zoonoses or from water sources. Major contributing factors in the emergence of these bacterial infections are: (1) development of new diagnostic tools, such as improvements in culture methods, development of molecular techniques and implementation of mass spectrometry in microbiology; (2) increase in human exposure to bacterial pathogens as a result of sociodemographic and environmental changes; and (3) emergence of more virulent bacterial strains and opportunistic infections, especially affecting immunocompromised populations. A precise definition of their implications in human disease is challenging and requires the comprehensive integration of microbiological, clinical and epidemiologic aspects as well as the use of experimental models. It is now urgent to allocate financial resources to gather international data to provide a better understanding of the clinical relevance of these waterborne and zoonotic emerging diseases.
Insights
Emerging bacterial diseases pose a significant public health threat, often originating from animals or water. Understanding their emergence requires integrating diagnostics, environmental factors, and pathogen evolution.
Area of Science:
- Microbiology
- Public Health
- Infectious Diseases
Background:
- Emerging and reemerging infectious diseases, particularly bacterial pathogens, represent a major global public health challenge.
- Since the 1950s, medical communities have increasingly confronted these threats, necessitating a focused review of bacterial origins.
Purpose of the Study:
- To review emerging and reemerging bacterial infectious diseases.
- To explore the factors contributing to their emergence.
- To identify future challenges in managing these diseases.
Main Methods:
- Identification of 26 major emerging and reemerging bacterial infectious diseases.
- Analysis of disease origins (zoonotic or waterborne).
- Review of contributing factors including diagnostic advancements, sociodemographic changes, environmental shifts, and pathogen virulence.
Main Results:
- Most identified bacterial diseases are zoonoses or waterborne.
- Key emergence factors include improved diagnostics (culture, molecular, mass spectrometry), increased human exposure due to societal/environmental changes, and the rise of virulent strains/opportunistic infections.
- Defining clinical implications requires integrating microbiological, clinical, and epidemiological data with experimental models.
Conclusions:
- Urgent international data collection and financial investment are needed.
- A comprehensive understanding of the clinical relevance of waterborne and zoonotic emerging bacterial diseases is critical for public health preparedness.
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