Japanese super computer shows humidity can limit the spread of Corona


A Japanese supercomputer showed that humidity can have a significant effect on limiting the spread of virus particles, indicating an increased risk of contracting the Coronavirus in dry indoor places during the winter.

The results indicate that the use of humidity control devices may help reduce infection during times when windows cannot be opened for ventilation, according to a study published yesterday (Tuesday) by the Riken Research Institute and Kobe University.

The researchers used a supercomputer (FUJACO) to simulate the emission and flow of virus-like particles from those infected in a variety of enclosed spaces.

The simulations showed that air humidity of less than 30 percent resulted in more than double the amount of volatile particles compared to humidity levels of 60 percent or more.

The study also indicated that face shields are not as effective as masks in preventing the spread of spray.

There is a growing consensus among health experts that the Corona virus can spread through the air. The US Centers for Disease Control and Prevention revised its guidelines this month to say the virus could remain in the air for hours.

And the research team at the Rakeen Institute has been used by the Fugaco supercomputer to simulate infection conditions in trains, workplaces and classrooms.

It is worth noting that simulations have shown that opening windows on passenger trains can increase ventilation by two to three times, reducing the concentration of surrounding microbes.


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