- Source: CNN " data-fave-thumbnails="{"big": { "uri": "https://media.cnn.com/api/v1/images/stellar/prod/200514134432-japan-video-coronavirus-spread-coren-pkg-intl-ldn-vpx-00010009.jpg?q=x_0,y_0,h_1080,w_1919,c_fill/h_540,w_960" }, "small": { "uri": "https://media.cnn.com/api/v1/images/stellar/prod/200514134432-japan-video-coronavirus-spread-coren-pkg-intl-ldn-vpx-00010009.jpg?q=x_0,y_0,h_1080,w_1
![Black light experiment shows how quickly a virus like Covid-19 can spread at a restaurant | CNN](https://cdn-ak-scissors.b.st-hatena.com/image/square/d0931ec2f239a358347a549b9a2004b4ecedd40a/height=288;version=1;width=512/https%3A%2F%2Fmedia.cnn.com%2Fapi%2Fv1%2Fimages%2Fstellar%2Fprod%2F200513154754-nhk-black-light-video.jpg%3Fq%3Dx_0%2Cy_0%2Ch_1406%2Cw_2498%2Cc_fill%2Fw_800)