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The experiment was conducted to explain how the virus may have spread on the Japanese cruise ship Princess Diamond, but it may be an illustration for several other contexts that anyone can be a part of. With an invisible liquid in the hands of a participant, the NHK television station simulated a meal in a buffet restaurant and demonstrated how in a few minutes everyone involved in the experiment ended up being contaminated.
In the scenario, one person was chosen to be the infected number zero, responsible for the beginning of the transmission chain, in a sample that had 10 elements. The fluorescent paint, which was placed on the hand of the first infected person, replaced the real particles expelled when coughing or sneezing and would only be visible with a special light. Also, he and the rest of the participants would spend half an hour sharing silverware and other objects while serving their own food.
ク ル ー ズ 船 で 感染 拡 大 を 招 い た と さ れ る 接触 感染 が ど の よ う に し て 起 き る の か, NHK が 専 門 家 験 を 行 こ と と こ こ, ウ イ ル ス に 見 立 て た 塗料 は 多数 の 人 が 触 る も の を 介 し て 広 が る こ と が 確認 さ れ ま し た 。https: //t.co/exeyyRXQiD pic.twitter.com/NCHGyJyXRw
– NHK ニ ュ ー ス (@nhk_news) May 8, 2020
Thirty minutes would have been enough time for all the people in the group to have already been contaminated by the “virus”: under the dark light, the ink glowed on the hands of all the participants and three of them had traces on their faces. Ink spots were also visible in those who were the key elements for its spread: beverage pitchers, food serving tongs, and other dishes used by multiple participants.
At this point, it is not new for virus particles to spread by sharing objects. Each virus has its specificity, which ends up influencing how it survives on different surfaces, but experience illustrates how, without hygiene care, anyone can be exposed and contaminated.
Video. How a mask can prevent particle dispersion when coughing
The experiment conducted by Japanese television aimed to illustrate how the Covid-19 virus spread on the Diamond Princess cruise ship, which docked in Yokohama in January. With more than 3,700 people on board, more than 700 people became infected, forcing the entire population of the vessel to be quarantined. At the end of the isolation period, he had recorded a total of 14 deaths.
How Japan “controlled” the outbreak for months, but allowed cases to triple in the past two weeks
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