Long-term antimicrobial effectiveness of a silver-impregnated foil on high-touch hospital surfaces in patient rooms

Area of Science:

• Infection control
• Materials science
• Microbiology

Background:

• Hospital environments are recognized as significant sources of bacterial transmission and hospital-acquired infections.
• Conventional cleaning and disinfection methods aim to reduce infection risks, particularly from gram-positive bacteria.
• Auto-disinfecting surfaces present a novel strategy to limit pathogen survival and maintain safe patient room environments.

Purpose of the Study:

• To evaluate the antimicrobial efficacy of a polyvinyl chloride (PVC) foil integrated with a silver-based agent.
• To assess the effectiveness of this antimicrobial foil on high-touch surfaces within patient rooms.

Main Methods:

• A controlled trial was conducted to assess the antimicrobial properties of the PVC foil.
• The foil contained a silver-based agent with 2% silver ions.
• Its application was on high-touch surfaces in patient rooms, with bioburden compared to control surfaces.

Main Results:

• A significant reduction in the overall mean bacterial load was observed (1.8 log10 CFU), with a median reduction of 0.5 log10 CFU (p < 0.01).
• Key pathogens, notably enterococci, were recovered less frequently from the antimicrobial foil surfaces.
• These antimicrobial effects persisted effectively for up to 6 months of use.

Conclusions:

• The integrated silver-based agent within the PVC foil demonstrates effective antimicrobial properties on high-touch surfaces.
• Application of this foil significantly reduces the recovery of critical pathogens over a 6-month period.
• This technology offers a sustainable solution for enhancing environmental hygiene and reducing infection transmission in healthcare settings.