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Related Experiment Video

Updated: Jul 13, 2026

Guided Protocol for Fecal Microbial Characterization by 16S rRNA-Amplicon Sequencing
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Examining Different Analysis Protocols Targeting Hospital Sanitary Facility Microbiomes.

Claudio Neidhöfer1, Esther Sib2, Al-Harith Benhsain1

  • 1Institute of Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Venusberg-Campus 1, 53127 Bonn, Germany.

Microorganisms
|January 21, 2023
PubMed
Summary

Hospital sanitation facilities harbor distinct microbial communities. Standardized methods are crucial for accurate hospital microbiome studies, with primer choice significantly impacting results.

Keywords:
16S rRNA gene sequencingNGSbuilt environmenthigh-throughput DNA sequencinghospital environmenthospital-acquired infectionsmicrobial ecologymicrobiome

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Area of Science:

  • Microbiology
  • Environmental Science
  • Hospital Epidemiology

Background:

  • Hospital environments possess unique microbial compositions distinct from indoor and outdoor spaces.
  • Understanding the hospital microbiome is critical for preventing hospital-acquired infections.
  • Standardized protocols for studying hospital microbiomes are currently lacking.

Purpose of the Study:

  • To investigate the microbiome of hospital sanitary facilities.
  • To assess the impact of different sample preparation protocols on hospital microbiome analysis.
  • To compare microbial diversity across various hospital sites and wards.

Main Methods:

  • Collected 50 samples from two hospitals, including wards and a laboratory.
  • Utilized two storage media, two DNA extraction kits, and two primer pairs (V1-V2 and V3-V4).
  • Analyzed microbial composition differences based on sample preparation methods.

Main Results:

  • No significant differences observed based on sample preservation media.
  • Minor variations in detected taxa noted between DNA extraction kits (e.g., Propionibacteriaceae).
  • Significant differences in detected taxa were found between V1-V2 and V3-V4 primer pairs.
  • Microbial composition varied greatly across toilets, sinks, showers, wards, and hospitals.
  • Patient toilets in surgical wards showed lower species richness and diversity than staff toilets.

Conclusions:

  • Primer selection is a critical factor influencing hospital microbiome study outcomes.
  • Sample processing methods, excluding primers, had minimal impact, suggesting comparability of studies.
  • Differences in microbial diversity between patient and staff toilets warrant further investigation, potentially linked to antimicrobial use.