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  • Title: Reduction of bacterial surface contamination in the hospital environment by application of a new product with persistent effect.
    Author: Hedin G, Rynbäck J, Loré B.
    Journal: J Hosp Infect; 2010 Jun; 75(2):112-5. PubMed ID: 20381907.
    Abstract:
    The benefit of routine surface disinfection in hospitals has been discussed. In this study we have investigated a new product, Appeartex. After application on surfaces a remnant effect is achieved due to the positive charge of the active molecule. We studied the persistent effect of Appeartex one day after application in both an experimental study in the laboratory and a field study in a hospital ward. Surfaces of bedside tables were investigated. In the experimental study, large inocula of >or=10(6)cfu of S. aureus or enterococci were inoculated on to well-defined areas which had been treated/not treated with Appeartex. One hour later, samples were taken with a swab rinse technique. A reduction in the number of viable bacteria in the magnitude 10-10(3) cfu was seen due to the effect of Appeartex. In the field study the effect on naturally occurring low level contamination was studied. Defined surfaces on bedside tables used by patients were treated/not treated with Appeartex. One day later, samples were taken with contact agar plates and with a new swab method using two sequential nylon flocked swabs. Significantly fewer bacteria were found on Appeartex-treated surfaces compared with untreated surfaces. The median counts on Appeartex-treated surfaces were 10 cfu/50 cm(2), and on untreated surfaces 20 cfu/50 cm(2). There was no significant difference in the number of bacteria found by culture of samples taken with the contact agar method compared with samples taken using the nylon flocked swab method.
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