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Determination of Ultraviolet Light Doses Needed to Inactivate Bacteria and Viruses on Hard

      Most of the existing data for doses needed to inactivated bacteria and viruses by ultraviolet light was developed in solution and little quantitative data has been developed for doses needed on hard surfaces. The goal of this study was to determine the doses of ultraviolet (UV) light needed for a 90 to 99.999% reduction of the test organism on various inanimate surfaces (fomites) using a collimated beam.
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