The ongoing SARS-CoV-2 pandemic has resulted in an increased need for technologies capable of efficiently disinfecting public spaces as well as personal protective equipment. UV light disinfection is a well-established method for inactivating respiratory viruses. Here, we have determined that broad-spectrum, pulsed UV light is effective at inactivating SARS-CoV-2 on multiple surfaces in vitro. For hard, non-porous surfaces, we observed that SARS-CoV-2 was inactivated to undetectable levels on plastic and glass with a UV dose of 34.9 mJ/cm 2 and stainless steel with a dose of 52.5 mJ/cm 2 . We also observed that broad-spectrum, pulsed UV light is effective at reducing SARS-CoV-2 on N95 respirator material to undetectable levels with a dose of 103 mJ/cm 2 . We included UV dosimeter cards that provide a colorimetric readout of UV dose and demonstrated their utility as a means to confirm desired levels of exposure were reached. Together, the results presented here demonstrate that broad-spectrum, pulsed UV light is an effective technology for the in vitro inactivation of SARS-CoV-2 on multiple surfaces.
【저자키워드】 COVID-19, SARS-CoV-2, coronavirus, ultraviolet, inactivation, 【초록키워드】 Personal protective equipment, SARS-CoV-2 pandemic, in vitro, respiratory viruses, glass, plastic, respiratory, utility, inactivated, dose, stainless steel, UV light, public spaces, Respirator, effective, reducing, demonstrated, reached, undetectable, 【제목키워드】 surface, LIGHT, material, Multiple,