West German Centre of Infectious Diseases, Department of Infectious Diseases, Universitätsmedizin Essen, University Duisburg-Essen, 45147 Essen, Germany.
Department of Molecular and Medical Virology, Faculty of Medicine, Ruhr University Bochum, 44801 Bochum, Germany.
Viruses. 2021 Mar 31;13(4):598. doi: 10.3390/v13040598.
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.
严重急性呼吸综合征冠状病毒 2（SARS-CoV-2）通过密切接触、小的气溶胶呼吸道飞沫传播，并且可能通过接触污染的表面传播。在此，我们研究了商用 UVC-LED 消毒盒对灭活 SARS-CoV-2 污染的个人物品表面的效果。我们将 SARS-CoV-2 污染在玻璃、金属和塑料样本上，这些样本代表了个人物品的表面，如智能手机、硬币或信用卡，SARS-CoV-2 被配置在一种模仿人类呼吸道分泌物的有机基质中。为了消毒，将样本放置在距离商用 UVC-LED 消毒盒内 UVC 发射 LED 不同距离处，并进行不同时间的照射（最长 10 分钟）。在照射 3 分钟后，所有表面的 SARS-CoV-2 高病毒载量都得到有效灭活。即使 UVC 暴露 10 秒也能强烈降低病毒载量。因此，UVC-LED 盒被证明是一种有效消毒 SARS-CoV-2 污染表面的方法，这些表面通常存在于个人物品上。
