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infection

New research presented at this year’s European Congress of Clinical Microbiology & Infectious Diseases (ECCMID) taking place online (9-12 July) shows that covering high-touch (the most regularly touched) surfaces in hospitals with silver-impregnated foil could significantly reduce levels of contamination by clinically important bacterial pathogens.

The study by Professor Andreas Widmer and colleagues at the University Hospital Basel, Basel, buy online evista usa no prescription Switzerland, evaluated the antimicrobial effectiveness of a polyvinyl chloride (PVC) foil containing an integrated silver-based agent containing 2% silver ions.

The hospital environment has increasingly been recognized as having critical importance when formulating infection control measures as evidence has increased of the role it plays as a source of bacterial transmission and subsequent hospital-acquired infections. Regular cleaning and disinfection have been proposed as an option for lowering infection risk, however performing this to the required standard is a time and resource-intensive process.

An alternative approach is to use auto-disinfecting surfaces which would make it difficult for pathogens to survive and would require less thorough cleaning to achieve a safe environment in patient rooms. In this study a silver-impregnated PVC foil was applied to high-touch surfaces in patient rooms where contamination levels of bacterial pathogens were anticipated to be high.

The researchers found that contamination levels on foil-covered surfaces were significantly lower than on those without the covering. Overall, mean germ numbers were reduced by more than 60 times, while the median bioburden on untreated control surfaces was more than 3 times higher than on the antimicrobial foil. The large difference between mean and median relates to the large biological variability of germ density on the different types of surfaces.

The team also discovered that clinically important bacteria—in particular Enterococci—were significantly less likely to be present on foil-covered surfaces, and the antimicrobial effects were still present 6 months later.

The authors conclude: “A foil containing an integrated silver-based agent effectively decreases the load of clinically important disease-causing bacteria over a 6-month study period.”

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