1716. Disinfection of Medical Equipment and Surfaces using a Novel Focused Multivector Ultraviolet-C Light System in Clinical Setting
Session: Poster Abstract Session: Infection Prevention: Cleaning and Disinfection
Saturday, October 10, 2015
Room: Poster Hall
Background: Healthcare associated infections (HAIs) are important causes of morbidity and mortality that cost the nation an estimated 35–45 billion dollars per year. Although major advances in infection control practice have reduced the frequency of HAIs, thousands of lives continue to be lost.  Novel strategies and technologies are needed to further advance the field. Ultraviolet disinfection of the inanimate environment is a rapidly evolving strategy that complements existing infection control practices. The Focused Multivector UV-C Light (FMUV) technology (PurpleSun Inc., NY) is a mobile system that employs a novel array of FMUV light energy fields with rapid microbicidal effect on bacterial and fungal pathogens.

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.

Ruta Petraitiene, MD1, Deborah Smith, RN2, Leslie Lygren, RN2, Thomas J. Walsh, MD1 and Vidmantas Petraitis, MD1, (1)Weill Cornell Medical Center of Cornell University, New York, NY, (2)Peak Resources Gastonia, Gastonia, NC


R. Petraitiene, None

D. Smith, None

L. Lygren, None

T. J. Walsh, None

V. Petraitis, None

Findings in the abstracts are embargoed until 12:01 a.m. PDT, Wednesday Oct. 7th with the exception of research findings presented at the IDWeek press conferences.