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Updated: Oct 16, 2025
Isolation and Identification of Waterborne Antibiotic-Resistant Bacteria and Molecular Characterization of their Antibiotic Resistance Genes
Published on: March 3, 2023
Carriage of Multidrug-Resistant Bacteria in Healthy People: Recognition of Several Risk Groups
1U1286 INFINITE-Institute for Translational Research in Inflammation, Institut National de la Santé et de la Recherche Médicale (INSERM), Centre Hospitalier Régional Universitaire de Lille (CHU Lille), University of Lille, 59000 Lille, France.
Abstract:
The increase in multidrug-resistant (MDR) bacteria in hospitalized people and the hospital environment has been thoroughly documented. In contrast, little is known about their presence in the community. However, increasing evidence is showing a high level of carriage in people without infectious signs. Colonized people can later develop infections due to MDR bacteria and may be able to transmit them to susceptible people (the number of which is increasing worldwide), for example, people with comorbidities such as diabetes, cancer, or inflammatory diseases and those in extreme age groups. Risk factors for the acquisition of MDR bacteria are as follows: (1) residence or travel in countries with high levels of MDR bacteria; (2) occupational risks such as health workers or people with close contact with animals (farmers, veterinarians) who frequently use antibiotics; and (3) comorbidities. Eradication is rather difficult and, thus far, has not shown clear-cut results. Preventive measures will be important in the future with a reinforcement of hygienic measures not only in the hospital, but also in the community.
Insights
Multidrug-resistant (MDR) bacteria are increasingly found in the community, posing risks to vulnerable populations. Prevention through enhanced hygiene is crucial, as eradication proves difficult.
Area of Science:
- Microbiology
- Public Health
- Infectious Diseases
Background:
- Multidrug-resistant (MDR) bacteria are well-documented in hospitals but understudied in the community.
- Increasing evidence shows high carriage rates in asymptomatic individuals.
- Colonized individuals can develop infections and transmit MDR bacteria to susceptible populations.
Purpose of the Study:
- To highlight the growing concern of multidrug-resistant bacteria in the community.
- To identify risk factors associated with MDR bacteria acquisition.
- To emphasize the need for preventive strategies.
Main Methods:
- Literature review and synthesis of existing evidence on MDR bacteria prevalence and risk factors.
- Analysis of transmission dynamics from asymptomatic carriers to susceptible individuals.
- Evaluation of current eradication challenges and future prevention strategies.
Main Results:
- Significant carriage of MDR bacteria exists in the community, often without overt infection.
- Key risk factors include international travel, occupational exposure (healthcare, agriculture), and comorbidities.
- Eradication of MDR bacteria is challenging, with limited successful outcomes reported.
Conclusions:
- Community-acquired MDR bacteria represent a growing public health threat.
- Preventive measures, particularly enhanced hygiene in both hospital and community settings, are essential.
- Further research is needed to develop effective eradication and control strategies.
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