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A study by British scientists shows that in confined spaces, the coronavirus spreads more by talking than by coughing. These studies also show that proper ventilation is very important. By the way, they created a tool that helps to evaluate the quality of this ventilation in terms of virus threat.
- Scientists from the University of Cambridge have conducted a study which shows that in closed rooms, talking is more conducive to the spread of the coronavirus than coughing
- That is why proper ventilation is so important. Proper airing of the rooms reduces the risk of catching the virus several times
- They also created an application that allows you to prepare the interior of the store, workplace or lecture rooms in the best possible way to minimize the risk
- You can find more up-to-date information on the coronavirus on the Onet homepage
Researchers from the University of Cambridge and Imperial College London used mathematical models to show how SARS-CoV-2 – the virus that causes COVID-19 – spreads in different rooms, depending on room size, number of people, ventilation level, and whether masks are worn. The results of the research were published in the journal Proceedings of the Royal Society. They show that keeping a distance indoors is not enough to effectively protect against the virus, if ventilation is inadequate and we do not wear masks.
- What are the types of face masks?
Based on these models, the free Airborne.cam web tool was created to help you understand how ventilation and other measures affect indoor transmission risk
A survey of the British showed. that for two people in a poorly ventilated room without masks, long conversations are more conducive to the spread of the virus than coughing attacks. As we speak, we exhale smaller droplets and aerosols, which may contain viruses, which spread throughout the room and accumulate in the air if ventilation is insufficient. When coughing, more drops are ejected, they are larger, but they do not stay in the air, but settle on various surfaces.
When not wearing masks, sprays take a few seconds to cover a two-meter distance. Then even keeping the distance is not enough if we are exposed to long exposure. However, when we wear masks, they slow down the rush of exhaled air and filter some of the exhaled droplets, which in turn reduces the amount of virus that is floating in the air.
Our knowledge of the transmission of SARS-CoV-2 by air has evolved at a tremendous pace considering it was only a year after the virus was identified. In our research, we examine various scenarios of airborne transmission of the virus, then we examine how small droplets can accumulate in rooms in the long term and how this can be remedied with adequate ventilation, said Dr Pedro de Oliveira from the University of Cambridge Faculty of Engineering, one of the authors of the study.
One example shows that an infected person speaking for an hour in a poorly ventilated room has 10-20 percent chance of passing the virus. This transmission risk can be reduced by up to three times if the air in the room is changed 10 times during this time.
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The Airborne.cam tool they created can be very useful for people working in shops, companies or universities to determine if ventilation is adequate. The tool is already in use in several departments at the University of Cambridge.
“The tool can help people harness the principles of fluid mechanics to make their choices as good as possible in terms of minimizing risk,” said fellow study author Savvas Gkantonas.
Read also:
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- Nine arguments to convince skeptics to vaccinate
- UK Coronavirus Variant – Five Things You Need to Know
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