Methods and Mechanisms of Photonic Disinfection

Healthcare-associated infections (HAIs) are a growing social and economic problem in the United States. A HAI is an infection that develops as a result of medical care and is typically contracted in a hospital, outpatient surgery center, nursing home, rehabilitation facility, or while receiving wound care services. One new tool to fight the increasing threat of HAIs is photonic disinfection (optical light-based disinfection). Photonic disinfection of air, surfaces, and liquids has witnessed rapid adoption within many industries (e.g., drinking water purification, wastewater treatment, indoor air purification) over the past 20 years. More recently, light-based disinfection technologies have started to make their way into hospitals, clinics, and medical centers to aid in the disinfection of air and surfaces. Two photonic disinfection methods of interest are the use of ultraviolet-C wavelengths (200 nm to 280 nm) and blue wavelengths (400 nm to 420 nm). These wavelengths of interest have been proven to be effective disinfection tools and should be put into use to augment traditional infection-prevention techniques.