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. 2021 Jun 21;43(7):886–891. doi: 10.1017/ice.2021.249

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© The Society for Healthcare Epidemiology of America 2021

This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 4. — GUV inactivation of HCoV-229E on intact N95 respirators is subject to differential efficacy based on location of inoculation. (A) Graphical representation of the zones on the N95 respirators that were spotted with microdroplets of HCoV-229E. Zones 1–4 represent (1) nose, (2) right cheek, (3) left cheek, and (4) chin. (B) Plaque assay after UV treatment of HCoV-229E-contaminated respirators, separated by zone in the small or large UV devices. Data are representative of 3 independent experiments with 3 technical replicates per experiment (n = 9). Error bars represent SD. Statistical significance was determined using an unpaired t test.