Methicillin-resistant Staphylococcus aureus (MRSA) contamination in bedside surfaces of a hospital ward and the potential effectiveness of enhanced disinfection with an antimicrobial polymer surfactant

International Journal of Environmental Research and Public Health
John W M YuenAlice Y Loke

Abstract

The aim in this study was to assess the effectiveness of a quaternary ammonium chloride (QAC) surfactant in reducing surface staphylococcal contamination in a routinely operating medical ward occupied by patients who had tested positive for methicillin-resistant Staphylococcus aureus (MRSA). The QAC being tested is an antibacterial film that is sprayed onto a surface and can remain active for up to 8 h. A field experimental study was designed with the QAC plus daily hypochlorite cleaning as the experimental group and hypochlorite cleaning alone as the control group. The method of swabbing on moistened surfaces was used for sampling. It was found that 83% and 77% of the bedside surfaces of MRSA-positive and MRSA-negative patients respectively were contaminated with staphylococci at 08:00 hours, and that the staphylococcal concentrations increased by 80% at 1200 h over a 4-hour period with routine ward and clinical activities. Irrespective of the MRSA status of the patients, high-touch surfaces around the bed-units within the studied medical ward were heavily contaminated (ranged 1 to 276 cfu/cm2 amongst the sites with positive culture) with staphylococcal bacteria including MRSA, despite the implementation of daily hypochlorite ...Continue Reading

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Citations

Sep 23, 2016·International Journal of Molecular Sciences·Keng-Shiang HuangYung-Sheng Lin
Mar 21, 2017·Current Opinion in Anaesthesiology·Sharon Einav, Yonit Wiener-Well
Mar 15, 2018·Annals of Plastic Surgery·Kasandra R DassoulasChristopher A Campbell
Aug 28, 2019·Antimicrobial Resistance and Infection Control·Xinyu SongAndrea Zille
Jul 2, 2020·Environmental Geochemistry and Health·Celso Figueiredo GomesEduardo Ferreira da Silva
Nov 11, 2019·Applied and Environmental Microbiology·Michael G SchmidtStephanie Craig
Feb 2, 2021·Journal of Materials Science·Shreya KanthYashoda Malgar Puttaiahgowda

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