Methods: Surface cultures were obtained to quantify and isolate microorganisms from high-touch surfaces in a long-term care clinical setting pre and post FMUV treatment. Post treatment cultures were taken after a 90 second FMUV exposure cycle. Multiple surfaces were chosen for analysis within 32 semi-private patient rooms. Approximately 1,500 cultures were obtained from surfaces of multiple objects using Trypticase soy agar and Columbia contact plates. There was no mechanical cleaning performed at any time during the study. Plates were incubated for 48 h at 37°C and CFU/plate were counted. Post-FMUV treatment cultures showing no growth were kept for additional 40-48 h at room temperature and examined again for growth.
Results: There were significant decreases in CFU/plate of all bacterial and fungal pathogens detected on all tested surfaces post FMUV exposure in comparison to that of pre-exposed surfaces on the following items: over-the-bed tables (p≤0.01), patient beds/mattress (p≤0.05), night stands (p≤0.01), sinks (p≤0.001), toilets (p≤0.01), medicine carts (p≤0.05), dirty linen carts (p≤0.01), wound treatment carts (p≤0.01), and environmental services cleaning carts (p≤0.001).
Conclusion: Focused Multivector UV-C Light technology is a highly effective system for rapid environmental disinfection of bacterial and fungal pathogens in a healthcare setting.
L. Lygren, None
T. J. Walsh, None
V. Petraitis, None