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Scientists Call on C.D.C. to Set Air Standards for Workplaces, Now

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  • Scientists Call on C.D.C. to Set Air Standards for Workplaces, Now

    The agency has not fully reckoned with airborne transmission of the coronavirus in settings like hospitals, schools and meatpacking plants, experts said.

    Feb. 17, 2021Updated 12:08 p.m. ET
    By Apoorva Mandavilli

    Nearly a year after scientists showed that the coronavirus can be inhaled in tiny droplets called aerosols that linger indoors in stagnant air, more than a dozen experts are calling on the Biden administration to take immediate action to limit airborne transmission of the virus in high-risk settings like meatpacking plants and prisons.

    The 13 experts — including several who advised President Biden during the transition — urged the administration to mandate a combination of masks and environmental measures, like better ventilation, to blunt the risks in various workplaces.

    On Friday, the Centers for Disease Control and Prevention issued new guidelines for reopening schools, but quickly passed over improved ventilation as a precaution. It was only in July that the World Health Organization conceded that the virus can linger in the air in crowded indoor spaces, after 239 experts publicly called on the organization to do so.

    In a letter to the administration, scientists detailed evidence supporting airborne transmission of the virus. It has become even more urgent for the administration to take action now, the experts said, because of the slow vaccine rollout, the threat of more contagious variants of the virus already circulating in the United States, and the high rate of infections and deaths, despite a recent drop in cases.

    ...“Until the C.D.C. makes some changes, OSHA will have difficulty changing the recommendations it puts up because there’s an understanding the government has to be consistent,” Dr. Michaels said. “And C.D.C. has always been seen as the lead agency for infectious disease.”




  • #2
    University of Minnesota's Osterholm: Respect COVID-19 aerosol threat

    The researchers criticized the CDC for acknowledging the aerosol risk last fall but offering no changes in the national COVID-19 response strategy.

    By Jeremy Olson Star Tribune
    FEBRUARY 17, 2021 — 8:35AM

    University of Minnesota infectious disease expert Michael Osterholm joined with leading aerosol and occupational scientists Monday to call for clearer federal guidance on the risk of COVID-19 spreading through tiny aerosols floating in the air.

    The researchers criticized the U.S. Centers for Disease Control and Prevention for acknowledging the aerosol risk last fall but offering no changes in the national COVID-19 response strategy to confront it. The national strategy primarily targets the risk of people projecting larger, virus-carrying droplets at others nearby.

    "Aerosols produced through breathing, talking, and singing … can remain in air and viable for long periods of time and travel long distances within a room and sometimes farther," the authors wrote in a letter to the CDC and the White House pandemic response leader.

    ... Ehresmann (Kris Ehresmann, state infectious disease director) agreed with the need for caution because of the emergence of new and more infectious variants of the SARS-CoV-2 coronavirus. Minnesota has encountered 40 COVID-19 cases involving the B.1.1.7 variant found in the United Kingdom, she said. Minnesota also has seen two of three verified infections in the U.S. so far with the P.1 variant identified in Brazil.

    ... Osterholm and colleagues noted in their letter to the CDC and the White House pandemic response leader the emerging risk of variants as a reason to take the existing risk of aerosol COVID-19 transmission seriously. Two top aerosol scientists — Donald Milton of the University of Maryland and Linsey Marr of Virginia Tech — were among the 13 experts who signed the letter.

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