Health
According to scientists, the coronavirus can spread further through respiratory droplets in winter
According to scientists, the coronavirus can spread further through respiratory droplets in winter. & NbspPhoto Credits: & nbspiStockImages
Angels: New studies show that transmission of the new coronavirus as small aerosol particles is more important in summer, but direct contact with respiratory droplets can be more pronounced in the winter months.
A modeling study published in the journal Nano Letters also states that the physical distance guidelines currently followed are inadequate to control COVID-19 infection.
“In most situations, we found that the droplets travel longer than the CDC’s recommended 6-foot social distance,” said Yanying Zhu, co-author of a study at the University of California, Santa Barbara, USA. Says. ..
In cool and humid indoor environments, such as walk-in refrigerators and coolers, to prevent fresh meat and produce from losing water during storage, this effect increases when droplets travel up to 6 meters. Said (19.7 feet) before falling to the ground.
They said that in such environments, the virus is particularly persistent and “infects in different environments for minutes to longer than a day.”
“This may be an explanation for these super-diffusion events reported at multiple meat processing plants,” Zhu said.
In the opposite extreme, in hot and dry places, researchers said that respiratory droplets evaporate more easily.
In such situations, the evaporated droplets leave small viral fragments that bind to other aerosolized viral particles that are released as part of speaking, coughing, sneezing, and breathing, they said.
“These are very small particles, usually less than 10 microns, and they can float in the air for hours, so you can take them in just by breathing,” said the lead researcher. The author, Lei Zhao, said.
Scientists have stated that aerosol propagation can be more important than droplet contact in the summer, and droplet contact can be more dangerous in the winter.
“This means that depending on the local environment, people may need to adopt different adaptations to prevent the transmission of the disease,” Zhao said.
Scientists recommended increasing social distance when the room was cool and humid, and finer masks and air filters during hot and dry spells.
According to the researchers, the hot and humid environment, and the cold and dry environment, did not make a significant difference between the aerosol and droplet distribution.
They believe that the findings may serve as useful guidance for public health decision makers in efforts to minimize the spread of COVID-19.
“When combined with our research, I think we can provide design guidelines for optimal filtering of facial masks,” says Zhao.
He added that this study could be used to quantify actual exposure to the virus-how many viruses could land on the human body during a particular exposure period.
According to scientists, the insight “may shed light on the current process of pandemic development when combined with systematic epidemiological studies.”
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