Optimizing Textile Disinfection in Hospital-Associated Infections Using Gaseous Ozone

Area of Science:

• Microbiology
• Environmental Science
• Materials Science

Background:

• Healthcare-associated infections (HAIs) are a major concern, increasing hospital stays and costs.
• Traditional disinfection methods for hospital fabrics may be limited in reach and sustainability.
• Contaminated textiles serve as reservoirs for common HAI pathogens.

Purpose of the Study:

• To assess the efficacy of gaseous ozone in disinfecting hospital fabrics.
• To evaluate ozone's effectiveness against common HAI pathogens like *Staphylococcus aureus*, *Escherichia coli*, and *Candida albicans*.
• To determine ozone's penetration capabilities in layered fabrics.

Main Methods:

• Artificial contamination of cotton, polyester, and blended fabrics with specific pathogens.
• Exposure of contaminated fabrics to gaseous ozone using an automatic rotary dispenser for 25 and 45 minutes.
• Testing of layered fabrics to evaluate ozone penetration into folds and seams.

Main Results:

• A 25-minute ozone exposure significantly reduced microbial load on all fabric types.
• A 45-minute cycle led to near-complete elimination of tested pathogens.
• Ozone effectively disinfected inner fabric layers, demonstrating deep penetration.

Conclusions:

• Gaseous ozone is highly effective for disinfecting hospital textiles, including layered materials.
• Ozone offers a sustainable, residue-free disinfection alternative for healthcare settings.
• This technology has the potential to reduce HAI transmission via contaminated fabrics.