NEW YORK (AP) – U.S. health officials are taking a new step to encourage Americans to wear masks: they’re emphasizing recent research that protects the person who wears a mask.
First, the Centers for Disease Control and Prevention advises people to wear masks because of the evidence that it prevents people infected with the coronavirus – whether they know it or not – from spreading it to others.
But this week the CDC posted a new scientific brief Discussion of a recent study finding that the wearer gets little protection.
Agency guidance has not changed. He advises Americans to wear masks to prevent the spread of the virus.
The CDC’s Chief Medical Officer for Response to the COVID-19 Crisis “But now we’re saying another reason here,” John Brooks said.
Agency officials were impressed by the recent study Led by Japanese researchers, who used mannequin heads and artificial respiration to correspond to the spread of coronavirus particles from the air, and how the mask blocked transmission.
Previous research has confirmed that masks work best when worn by an infected person who can spread them by coughing, sneezing or talking. Infections have been found to mask about 60% of the amount of virus transmitted from an infected person.
But the researchers also benefited from the fact that when a person wearing a mask was unlucky enough to be close to an infected person who was not wearing one. If he wears a mask, in that scenario, the amount of virus inhaled by the infected person is reduced by 37% – 50%.
When both men wore masks, the reduction in virus particles reaching the other person was the largest – about 70%.
The study cannot mimic most real-world situations. For example, the head was closer than six feet, and the exhaled ka ne ta monkey head coughed more constantly than regular breathing.
But Brooks said the value of everyone wearing a mask has been suggested by many other studies of real-world conditions – including one from a Missouri hair salon client, another on a US airliner, and many others who found infections and deaths at adopted locations. Mask command.
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The Associated Press The Department of Health and Science is supported by the Department of Science Education at Howard Hughes Medical Institute. AP is fully responsible for all content.
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