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Pharmacy staff shows the KN95 mask. The National Institute for Occupational Safety and Health, affiliated with the Centers for Disease Control and Prevention (CDC), announced the results of tests on imported N95 (KN95) masks on the 30th of last month. [로이터=연합뉴스]
The Wall Street Journal (WSJ) reported on Day 3 (local time) that US government officials. USA They said that many of the N95-type masks imported from the United States were either below standard or defective. As a result, workers at medical institutions related to the new infectious coronavirus disease (Corona19) to which these masks were distributed were concerned that they were at risk of infection.
“64% or less of imported N95 mask”
81% of Chinese ‘KN95’ is of low quality
US medical personnel USA Raises concerns about exposure to infections
He also pointed out how to wear a ‘hanging ear’ mask.
The National Institute for Occupational Safety and Health (NIOSH), affiliated with the Centers for Disease Control and Prevention (CDC), announced the results of 67 types of imported N95 mask tests on the 30th of last month. More than 37 of these were made in China. Unlike the ordinary mask, N95 is a mask used for medical purposes and is regulated by NIOSH. N95 and the Chinese notation, KN95, means that it filters out very small particles that float in the air up to 95%.
According to the NIOSH test results, only 24 of the 67 imported masks passed the standard. There were also four types of masks with a microvirus blocking rate of less than 30%. There were 6 skins with a blocking rate between 30 and 50%. In particular, 30 of the 37 mask types marked “KN95”, or 81%, were below quality standards.
Additionally, the Massachusetts Institute of Technology (MIT) said that only a third of the N95’s performance was tested by examining Chinese masks distributed to the police and fire departments in Massachusetts. Summarizing the results of the NIOSH and MIT tests, many of the medical masks imported or produced in China are defective or low-quality products that are vulnerable to protection against viruses.
“It shows that millions of low-quality masks have been imported from China and the like,” said the WSJ. “Health workers at the Corona 19 site may be at greater risk.” NIOSH also said it was “very concerned” through WSJ.
How to wear a mask is also a problem
N95 mask. It was made in the form of wrapping the head with a rope to adhere the mask to the face. Reporter Kang Chan-soo
When NIOSH announced the results, they expressed concern about how to wear the mask. According to WSJ and NIOSH, the existing N95 mask is made using a string around the head for close contact with the face. This is to prevent microvirus blockage and splash infection.
However, most of the imported medical masks were worn on the ears. This is because the United States Food and Drug Administration (FDA) has allowed the import and use of N95-type masks certified according to some foreign standards, such as China, in response to the Corona 19 pandemic (a global pandemic). WSJ and NIOSH noted that this type of mask is not suitable for use by medical personnel exposed to viruses.
Reporter Seok Kyung-min [email protected]
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