Research

UV Device Effective in Reducing Pathogens

According to study conducted at the University of North Carolina Health Care, automated ultraviolet devices can significantly reduce pathogens in hospital patient rooms.Researchers used an automated UV device, Tru-D, to decontaminate patient rooms contaminated with MRSA, vancomycin-resistant enterococcus, Clostridium difficile and a multi-drug resistant strain of Acinetobacter baumannii. During the first phase of the trial, samples of MRSA, vancomycin-resistant enterococcus, Acinetobacter baumannii, and Clostridium difficile were placed behind objects and within line-of-sight of the ultraviolet device. The findings revealed that the ultraviolet device reduced vegetative bacteria counts by more than 99.9% within 15 minutes. It also reduced the Clostridium difficile spore counts by 99.8% within 50 minutes. In the second phase of the trial, isolation rooms for patients with MRSA or vancomycin-resistant enterococcus were tested using the device. After 15 minutes of ultraviolet-device exposure, there was a significant decrease in the total number of colony-forming units (384 vs 19), positive MRSA samples (81 vs two) and MRSA counts per plate (37 vs two). Similar reductions were observed for vancomycin-resistant enterococcus.

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