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Effectiveness Of A Portable, Large-Area Ultraviolet Germicidal Device, Mark P. Buttner, Thomas Yee, Patricia Cruz, Vanessa Stevens

Nevada Journal of Public Health

Effective disinfection of the hospital environment is a key component in the prevention of healthcare-associated infections. The objective of this project was to evaluate the effectiveness of an ultraviolet germicidal device in reducing the concentrations of culturable bacteria on indoor surfaces. The ultraviolet germicidal device was installed and operated in four experimental trials conducted in a microbiology research chamber. Agar plates inoculated with known concentrations of two test microorganisms were placed on benches inside the chamber at two distances, 1.5 meters and 3.0 meters from the machine, for exposure times of 5 minutes, 10 minutes, and 20 minutes. With test …