Blacklight experiment shows how quickly ... a virus can spread This article from CNN includes a video from Japan using black light to show how quickly a virus can be spread I’ll n a restaurant.

This is a very good way to illustrate the idea. Just one man has special lotion put on his hands; within 30 minutes it is everywhere, including on 3 people’s faces!

There goes the buffets in Las Vegas snd the cruise ships!!!

OTOH, when they had people be more aware of what they were doing and wash their hands, they were able to stop the spread.

Experiments like this could really help.

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