Health
CDC: Wearing a mask can prevent you from getting a virus
But this week, the CDC posted a new scientific summary discussing recent studies that have found wearers receive some protection.
The institutional guidance has not changed. It continues to advise Americans to wear masks to prevent the spread of the virus.
“But now we say there is another reason to do that,” said Dr. John Brooks, Chief Medical Officer of the CDC’s COVID-19 Emergency Response.
Agency officials were led by a Japanese researcher who used a mannequin head and a ventilator to simulate the diffusion of coronavirus particles into the air and evaluated how much the mask blocked permeation. I was influenced by recent research.
Previous studies have found that wearing a mask is most effective for infected individuals who may spread the mask by coughing, sneezing, or talking. Studies have shown that masks block about 60% of the amount of virus that comes out of infected people.
However, researchers have also found that unmasked infected people benefit when they are unlucky enough to be closer to unmasked infected people. In that scenario, when an uninfected person wore a mask, the amount of virus inhaled decreased by 37% to 50%.
When both people wore masks, the reduction of virus particles reaching the second was up to nearly 70%.
This study did not completely mimic most real-life situations. For example, the heads were closer than 6 feet, and the exhaled mannequin’s head coughed more than normal breathing.
But Brooks said that the value of everyone wearing a mask is the duty of a Missouri hairdresser customer, a US aircraft carrier customer, and a mask.
The Associated Press’s Department of Health Sciences is supported by the Department of Science Education at the Howard Hughes Medical Institute. The Associated Press is solely responsible for all content.
Copyright 2020 AP communication. all rights reserved. This material may not be published, broadcast, rewritten, or redistributed without permission.
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