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Updated: Jun 6, 2026

Culturing and Maintaining Clostridium difficile in an Anaerobic Environment
Published on: September 14, 2013
Gaseous and air decontamination technologies for Clostridium difficile in the healthcare environment
A Davies1, T Pottage, A Bennett
1Centre for Emergency Preparedness and Response, Health Protection Agency, Porton Down, Salisbury, Wiltshire, UK. anna.davies@hpa.org.uk
Abstract:
The recent data for hospital-acquired infections suggest that infection rates for meticillin-resistant Staphylococcus aureus (MRSA) and Clostridium difficile are beginning to decrease. However, while there is still pressure to maintain this trend, the resistance of C. difficile spores to standard detergents continues to present a problem for many UK hospitals trying to prevent its spread or control outbreaks. Alternative disinfection technologies such as gaseous decontamination are currently being marketed to the healthcare sector as an alternative/supplement to manual disinfection, and have been shown to be effective in reducing environmental contamination. When used correctly, they offer a complementary technology to manual cleaning that increases the probability of an effective reduction in viability and provides a comparatively uniform distribution of disinfectant. Three gaseous decontamination technologies are examined for their suitability in reducing environmental contamination with C. difficile: gaseous hydrogen peroxide, chlorine dioxide and ozone. Air decontamination and UV-based technologies are also briefly described. We conclude that while there is a role to play for these new technologies in the decontamination of ward surfaces contaminated with C. difficile, the requirement for both a preclean before use and the limited 'in vivo' evidence means that extensive field trials are necessary to determine their cost-effectiveness in a healthcare setting.
Insights
Hospital-acquired infections from Clostridium difficile are decreasing, but spore resistance remains a challenge. Gaseous decontamination offers a promising supplement to manual cleaning for reducing environmental contamination.
Area of Science:
- Infection control
- Environmental hygiene
- Healthcare-associated infections
Background:
- Hospital-acquired infections (HAIs) rates for MRSA and C. difficile are declining.
- Clostridium difficile spores exhibit resistance to standard detergents, complicating hospital disinfection protocols.
- Gaseous decontamination technologies are emerging as potential solutions for environmental disinfection in healthcare settings.
Purpose of the Study:
- To evaluate the efficacy of alternative disinfection technologies for reducing C. difficile contamination.
- To assess the suitability of gaseous decontamination methods as an adjunct to manual cleaning.
Main Methods:
- Review of three gaseous decontamination technologies: gaseous hydrogen peroxide, chlorine dioxide, and ozone.
- Brief description of air decontamination and UV-based technologies.
- Assessment of their effectiveness in reducing environmental C. difficile contamination.
Main Results:
- Gaseous decontamination technologies can effectively reduce environmental contamination when used correctly.
- These technologies offer a complementary approach to manual cleaning, enhancing disinfection uniformity and viability reduction.
- Pre-cleaning is a necessary step before employing these gaseous methods.
Conclusions:
- Gaseous decontamination technologies show potential for decontaminating ward surfaces contaminated with C. difficile.
- Further extensive field trials are required to ascertain their cost-effectiveness in healthcare settings.
- Limited in vivo evidence necessitates more research before widespread adoption.
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