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A High-throughput Platform for the Screening of Salmonella spp./Shigella spp.
Published on: November 7, 2018
Three-year prevalence of enteropathogenic bacteria in an urban patient population in Germany
O Liesenfeld1, T Weinke, H Hahn
1Institut für Medizinische Mikrobiologie und Infektionsimmunologie, Freien Universität Berlin, Germany.
Abstract:
The prevalence of enteropathogenic bacteria over a three-year period was 3.1% in an urban population in Germany. Nontyphoidal Salmonella spp. (1.8% prevalence) represented 59.3% of all positive isolates, followed by Campylobacter spp., which constituted 22.1% of such isolates. Clostridium difficile toxin was detected in 5.6% of samples submitted specifically for detection of cytotoxigenic C. difficile. The seasonal distribution showed an increase of Salmonella, Shigella and Aeromonas/Plesiomonas isolates in the post-holiday season, partly due to returning travelers. An epidemic five-fold increase of Salmonella enteritidis isolates was found over the three-year-period. Enteropathogenic bacteria such as Salmonella, Campylobacter and cytotoxigenic C. difficile were common etiologic agents of gastrointestinal tract infections in patients with AIDS. We conclude that travelers and HIV-infected subjects are especially prone to infection with enteropathogenic bacteria; preventive measures to control the Salmonella enteritidis epidemic are essential.
Insights
Enteropathogenic bacteria, including Salmonella and Campylobacter, are common causes of gastrointestinal infections. Travelers and HIV-infected individuals are particularly susceptible, necessitating targeted preventive measures.
Area of Science:
- Microbiology
- Infectious Diseases
- Public Health
Background:
- Enteropathogenic bacteria pose a significant threat to public health, causing gastrointestinal infections globally.
- Understanding the prevalence and epidemiology of these pathogens is crucial for effective disease control.
Purpose of the Study:
- To determine the prevalence and seasonal distribution of enteropathogenic bacteria in an urban German population.
- To identify specific risk groups, such as travelers and individuals with HIV/AIDS, for enteropathogenic bacterial infections.
Main Methods:
- A three-year retrospective study analyzing bacterial isolates from patient samples.
- Microbiological culture, biochemical tests, and toxin detection assays were employed.
Main Results:
- Overall prevalence of enteropathogenic bacteria was 3.1%.
- Nontyphoidal Salmonella spp. (1.8%) and Campylobacter spp. (22.1%) were the most common isolates.
- A five-fold increase in Salmonella enteritidis was observed, coinciding with post-holiday travel.
- Clostridium difficile toxin was detected in 5.6% of relevant samples.
Conclusions:
- Enteropathogenic bacteria are prevalent causes of gastrointestinal infections, with Salmonella and Campylobacter being key pathogens.
- Returning travelers and individuals with HIV/AIDS are at increased risk.
- An epidemic of Salmonella enteritidis highlights the need for enhanced surveillance and preventive strategies.
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