The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is transmitted from person to person by close contact, small aerosol respiratory droplets, and potentially via contact with contaminated surfaces. Herein, we investigated the effectiveness of commercial UVC-LED disinfection boxes in inactivating SARS-CoV-2-contaminated surfaces of personal items. We contaminated glass, metal, and plastic samples representing the surfaces of personal items such as smartphones, coins, or credit cards with SARS-CoV-2 formulated in an organic matrix mimicking human respiratory secretions. For disinfection, the samples were placed at different distances from UVC emitting LEDs inside commercial UVC-LED disinfection boxes and irradiated for different time periods (up to 10 min). High viral loads of SARS-CoV-2 were effectively inactivated on all surfaces after 3 min of irradiation. Even 10 s of UVC-exposure strongly reduced viral loads. Thus, UVC-LED boxes proved to be an effective method for disinfecting SARS-CoV-2-contaminated surfaces that are typically found on personal items.
【저자키워드】 SARS-CoV-2, UVC-box, ultraviolet light, 【초록키워드】 coronavirus, severe acute respiratory syndrome Coronavirus, Viral, Effectiveness, Disinfection, respiratory, inactivated, close contact, Contact, contact with, for disinfection, Respiratory droplets, acute respiratory syndrome, organic matrix, acute respiratory syndrome coronavirus, acute respiratory syndrome coronavirus 2, irradiation, high viral load, reduced viral loads, viral loads, contaminated surfaces, coins, effective, transmitted, investigated, representing, mimicking, 【제목키워드】 surface, item, Contaminated,