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Related Experiment Video

Updated: Feb 24, 2026

Pilot In Vitro Study to Assess Cleaning Ability and Effects of Different Decontamination Methods on Implant Surfaces
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Published on: November 21, 2025

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Contact patterns during cleaning of vomitus: A simulation study.

Yu-Min Su1, Linh Phan1, Osayuwamen Edomwande1

  • 1School of Public Health, University of Illinois at Chicago, Chicago, IL.

American Journal of Infection Control
|August 29, 2017
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Environmental service workers may spread pathogens when cleaning bodily fluids. Following recommended cleaning protocols can reduce environmental and self-contacts, improving safety.

Keywords:
Contact frequencyEnvironmental service workersHealth careInfectious diseases

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Area of Science:

  • Healthcare-associated infection control
  • Environmental hygiene in healthcare settings

Background:

  • Environmental service workers risk pathogen transmission when cleaning bodily fluids.
  • Contact with contaminated surfaces and self can lead to pathogen transfer.

Purpose of the Study:

  • To analyze surface and self-contact frequency during simulated bodily fluid cleanup.
  • To evaluate adherence to recommended cleaning protocols and its impact.

Main Methods:

  • Healthcare environmental service workers performed simulated vomitus cleaning in a controlled setting.
  • Videotaping and observation were used to record contacts with surfaces and self.

Main Results:

  • High frequency of environmental surface contacts (266/hour) and occasional self-contacts were observed.
  • Only a minority of participants (2/7) followed the recommended cleaning protocol.
  • Adherence to protocol correlated with fewer surface contacts and better cleaning outcomes.

Conclusions:

  • Training in recommended cleaning protocols can standardize practices.
  • Standardized protocols may significantly reduce environmental and self-contact, enhancing safety.