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Black light experiment shows speed of spread
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stog

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Black light experiment shows speed of spread
« on: May 15, 2020, 12:43:21 PM »
Black light experiment shows how quickly a virus like Covid-19 can spread at a restaurant

https://edition.cnn.com/2020/05/13/health/japan-black-light-experiment-coronavirus-trnd-wellness/index.html
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Tags: black light spread hygiene hand washing