Read full story of excerpt below at Source: >Black light experiment video from Japan shows how quickly a virus like Covid-19 can spread at a restaurant – CNN
“(CNN) A viral video from Japan aims to show how easily germs and viruses can spread in restaurants when just one person is infected.The experiment simulates the atmosphere at a buffet restaurant or on a cruise ship. It was conducted by the public broadcasting organization NHK in conjunction with health experts.The video shows 10 people coming into the restaurant, with one singled out as an “infected” person. A fluorescent substance only visible under black light is applied onto that person’s hands, representing germs from a cough or a sneeze. Each participant then goes about the buffet as they normally would, not considering a potential contamination. At the end of the video, the participants are cast under black lights illuminating where the “(simulated) infection” has spread.
“While these kinds of experiments are not new, John Nicholls, a clinical professor in pathology at Hong Kong University, said they demonstrate how quickly a virus can spread, especially when hand washing is not performed.”What the video demonstrated, is that it will spread to surfaces and to people very efficiently,” But both experts said the experiment is a good way to show the importance of hand washing and hygiene.