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Have you ever wondered how corobavirus will spread to a mass of ten people, when limited meetings will soon be allowed? An experiment by the Japanese press group NHK answers this question using a fluorescent paint.
An experiment carried out by the Japanese group NHK in collaboration with experts illustrates how the coronavirus spreads, as it could have happened on cruise ships, around a buffet, but also in a bar or restaurant.
The group specified in a report published on social networks that 10 people participated in the experiment. One of the participants at the table played the role of an infected person. A drop of a liquid visible only in ultraviolet light poured into his hand, like a virus applied to his palm. The experiment lasted 30 minutes and the results were seen at the end of the meal.
Therefore, it turned out that the “virus” spread to the hands of all the participants, several had it on their faces, plates, the lid of the food container, cutlery used to carry food and on the handle of the food container. drinks.
An experiment to visualize the flow of particles released during cough previously established that the recommended safe distance of one meter between people to avoid contamination may be insufficient.
Researchers from Florida Atlantic University have shown that the spread of cough particles can travel up to 3.6 meters. The fine droplets removed when a person infected with a coronavirus coughs or sneezes contains viable coronavirus particles. They can spread the infection if they come in contact with other people’s eyes, mouth, or nasal mucosa.
#Japan 🇯🇵 – Experience: How are germs spread? Fluorescent paint was applied to the hands of one person dining with a group of 10 people. In 30 minutes, the paint was transferred to each individual and was on the faces of 3 people.
via @nhk_news pic.twitter.com/NmwqxlVBU2– ⓃⒺⓌⓈ – ⓂⒺⓃⒶ · ۰ • ● (@News_Mena_) May 8, 2020
According to the results of a laboratory experiment, such fine particles containing coronaviruses can transmit the infection even after 3 hours from expulsion. To reduce the risk of self-infection and that of others, it is absolutely necessary to follow the recommended hygiene rules (wash your hands frequently, cover your mouth when sneezing with a napkin, not your hand) and a distance of at least three steps from others.
The new coronavirus (SARS-CoV-2), the virus responsible for the current COVID-19 pandemic, has been shown to be more effective than Severe Acute Respiratory Syndrome (SARS-CoV) in infecting the human respiratory tract and eyes, according to a team of researchers from the University of Hong Kong School of Medicine, which published the results of a study on Friday, Xinhua reported.
Michael Chan Chi-wai, an associate professor at the university’s School of Public Health, and his research team compared infections with SARS-CoV-2, SARS-CoV, and influenza viruses such as H5N1 and H1N1, using tissue samples taken of the respiratory tract. human and upper eye tissue in a level 3 biosecurity laboratory.
The results revealed that the virus that causes COVID-19 disease is much more effective in infecting the human conjunctiva and upper respiratory tract compared to SARS-CoV, and its level of contagion is comparable to that observed during the 2009 H1N1 pandemic. .
Taken together, these results explain the higher transmissibility of COVID-19 compared to SARS-CoV.
“This study also highlights that the eyes may be a major route of human infection with SARS-CoV-2 (COVID-19),” said Professor Chan.
In a previous study, the research team found that the virus that causes COVID-19 can stay alive for several days on smooth surfaces, such as stainless steel, glass, and plastic.
The new findings highlighted the possibility of this contagious virus spreading from such surfaces through the hands, when people touch the contaminated areas and then touch the eye area.
The research results imply that it is vital to avoid touching your eyes in public areas and regularly washing your hands with soap and water or cleaning your hands with disinfectants as an essential measure to prevent accidental transfer of the COVID-19 virus from contaminated surfaces to the eyes. and nose
The study was published in the Lancet Respiratory Medicine journal.
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