Improving the cleaning and disinfection of high-touch surfaces is one of the core components of reducing healthcare-associated infections. The effectiveness of an enhanced protocol applying UV-C irradiation for terminal room disinfection between two successive patients was evaluated. Twenty high-touch surfaces in different critical areas were sampled according to ISO -, both immediately pre- and post-cleaning and disinfection standard operating protocol (SOP) and after UV-C disinfection ( sampling sites in each condition, in total). Dosimeters were applied at the sites to assess the dose emitted. A total of .% (/) of the sampling sites tested after SOP were positive, whereas only .% (/) were positive after UV-C. According to the national hygienic standards for health-care setting, .% (/) resulted in being non-compliant after SOP and only .% (/) were non-compliant after UV-C disinfection. Operation theaters was the setting that resulted in being less compliant with the standard limit (&#x; colony-forming unit/ cm

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In this hospital, cleaning services were outsourced. According to the contract and the cleaning and disinfection standard operating protocol (SOP), during terminal disinfection, the housekeeping staff applied a chlorine-based detergent, Antisapril Detergent %, Angelini, followed by a chlorine-based disinfectant (Deornet Clor (COSÌ, Forlì-Cesena, Italy), active chlorine mgr/L) on furniture surfaces and electromedical devices.

In that regard, the World Health Organization has reiterated the importance of using this type of disinfection after the adoption of the standard protocol for sanitizing hospital rooms, but, during the COVID- pandemic, the use of UVC radiation was also proposed immediately after the patient has been discharged in order to reduce the risk of the cleaning staff being infected, who can then safely apply the standard protocol [

Although the dose measurement system used in our study (FastCheck Mediland, Taoyuan City , Taiwan) is semi-quantitative, it allowed us to detect if the dose reached adequate values for disinfection and to repeat the application when the value was not satisfactory. However, each dose value exceeded the expected value. This demonstrates that the device was positioned correctly in order to avoid shadow areas, although it was necessary to properly place furniture and equipment to improve the irradiation of all surfaces. In the study conducted by Wong et al., the R-D Rapid Disinfector system (Steriliz, Rochester, NY, USA) was used in a tertiary care hospital to evaluate the incremental benefit of UV-C disinfection in isolation rooms after the discharge of infected patients. The employed robot used four detached sensors to directly measure the UV-C light [