Health
Letters from leading researchers encourage terminology updates, shifts in COVID-19 guidance
Colored scanning electron micrographs of cells strongly infected with SARS-CoV-2 virus particles (red) (blue) isolated from patient samples. Image taken at the NIAID Integrated Research Facility (IRF) in Fort Detrick, Maryland. Credit: NIAID
In a letter published in the journal on Monday, scientists from major US research institutes Science Cross-disciplinary researchers must converge to provide clear public health guidance on how SARS-CoV-2 is spreading in the air.
Researchers Open letter That Scientific community The terminology used in relation to aerosols and droplets should be clarified and more modern size thresholds should be adopted rather than existing thresholds based on 1930s research. Authors include experts from the University of California, San Diego, the University of Maryland, and Virginia Tech.
Public health officials have identified droplets emitted by coughing and sneezing (which affected the social distance mantra, which is 6 feet away) and aerosols that can carry aerosols. You need to make a distinction. Virus For a much longer distance. Viruses in aerosols smaller than 100 microns can remain in the air for extended periods of time in confined spaces and accumulate in poorly ventilated air, leading to infection.
A group led by Kimberly Placer, director of the National Science Foundation-sponsored Aerosol Impact Center for Environmental Chemistry, based at the Scripps Institution of Oceanography at the University of California, San Diego, said: “Balance of attention from aerial propagation. We have to move on to protection. ” Diego.
“The virus in the aerosol can remain suspended in the air for seconds to hours like smoke and be inhaled,” the letter said. “They are so concentrated near the infected person that they are the easiest to infect nearby people. However, aerosols containing infectious viruses [two meters] Accumulates in poorly ventilated areas Indoor air, Leads to a large event. “
In addition to wearing masks, social distance and hygiene efforts, researchers told public health officials to move outdoor activities, improve indoor air using ventilation and filtration, and high-risk workers. We call for clarification of the importance of improving protection in Japan.
“The purpose of this letter is to clarify that the SARS-Cov-2 virus can be transmitted in the air and that people can be transmitted by inhalation,” said the Scripps Institution of Oceanography, University of California, San Diego. Praser, a prominent co-appointed professor, said. Oceanography and its chemistry and biochemistry departments. “It’s important to be aware of this route, so you can focus on providing guidance on how to clean the air and avoid dangerous indoor environments.”
Co-author Linsey Marr, Professor Charles P. Lunsford of Civil and Environmental Engineering, Virginia Tech, and Aerial transmission Regarding viruses, “It is important to always wear a mask in public buildings and closed areas, not just when social distance cannot be maintained. This is not just an academic issue, it is a useful point. Public health authorities If you provide clear and powerful guidance on this, reduce the infection. ”
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University of California, San Diego
Quote: A letter from a leading researcher, updated terminology obtained on October 5, 2020 from https: //medicalxpress.com/news/2020-10-letter-urges-terminology-shift-covid-, COVID -19 Encourage a shift in guidance (October 5, 2020) .html
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