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Persistent Identifier
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doi:10.7910/DVN/Z7CBH8 |
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Publication Date
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2025-05-27 |
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Title
| Extracted Data From: Efficacy of Portable Air Cleaners and Masking for Reducing Indoor Exposure to Simulated Exhaled SARS-CoV-2 Aerosols — United States, 2021 |
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Author
| National Institute for Occupational Safety and HealthCDC - Centers for Disease Control and Prevention |
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Point of Contact
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Use email button above to contact.
CAFE |
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Description
| This submission includes publicly available data extracted in its original form. Please reference the Related Publication listed here for source and citation information
If you have questions or recommendations related to this metadata entry and extracted data, please contact the CAFE Data Management team at: climatecafe@bu.edu. If you have questions about the underlying data stored here, please contact Health Effects Laboratory Division, Allergy and Clinical Immunology Branch at sa-cin-webteam@cdc.gov.
"SARS-CoV-2 can be spread by droplets and aerosols expelled by infected people when they cough, talk, sing, or exhale. To reduce exposure to these droplets and aerosols while indoors, CDC recommends measures including physical distancing, universal mask wearing, and room ventilation. Ventilation systems can be supplemented with portable air cleaners to remove infectious material from the air more quickly and provide greater protection. We conducted a case study using respiratory simulators to examine the efficacy of portable High Efficiency Particulate Air (HEPA) air cleaners and universal masking at reducing exposure to simulated exhaled aerosol particles from an infected meeting participant in a conference room. We found that, in a room with good air mixing, the use of two HEPA air cleaners meeting the EPA recommended Clean Air Delivery Rate (CADR) reduced the overall exposure by up to 65%, and that the combination of the HEPA air cleaners and universal masking reduced exposure by up to 90%. The air cleaners were most effective when they were close to the aerosol source. Our results demonstrate that portable HEPA cleaners can be an effective method to reduce exposure to airborne particles while meeting indoors, especially in combination with universal masking." [Quote from https://data.cdc.gov/National-Institute-for-Occupational-Safety-and-Hea/Efficacy-of-Portable-Air-Cleaners-and-Masking-for-/wtvk-6zfr/about_data] > (2025-07-07) |
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Subject
| Medicine, Health and Life Sciences |
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Keyword
| SARS-CoV-2 https://tools.niehs.nih.gov/cchhglossary/
Air Cleaners
Masking |
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Notes
| This submission includes publicly available data extracted in its original form. Please reference the Related Publication listed here for source and citation information. Efficacy of Portable Air Cleaners and Masking for Reducing Indoor Exposure to Simulated Exhaled SARS-CoV-2 Aerosols — United States, 2021 data was downloaded by Ariel Chamberlain on 2025-05-07. |
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Language
| English |
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Depositor
| Chamberlain, Ariel |
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Deposit Date
| 2025-05-09 |
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Time Period
| Start Date: 2021-01-01; End Date: 2021-12-31 |
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Data Type
| Extracted Data |
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Documentation and Access to Sources
| Terms and conditions were captured directly from the CDC Use of Agency Materials page (https://www.cdc.gov/other/agencymaterials.html) and are pasted below: "Most of the information on the CDC and ATSDR websites is not subject to copyright, is in the public domain, and may be freely used or reproduced without obtaining copyright permission. There are, however, a few exceptions. A federal government website may have a mix of public domain and copyright-protected materials. First, some resources, as well as images, on the CDC and ATSDR websites are restricted in their use because they were developed by government contractors or grantees, or have been licensed by a third party. Second, the U.S. government work designation does not apply to works of state and local governments; works of state and local governments may be protected by copyright. Third, copyright laws also differ internationally. While U.S. federal copyright laws may not protect U.S. government works outside the United States, the work may still be protected under the copyright laws of other countries when used in these jurisdictions. Copyright-protected materials featured on the CDC and ATSDR websites should include a copyright statement. However, if in doubt, please write to the contact point for that site. The following requirements must be followed to utilize CDC’s public domain content: 1) Attribution to the agency that developed the material must be provided in your use of the materials. Such attribution should clearly state the materials were developed by CDC ATSDR and/or HHS (e.g., “Source: CDC”; “Materials developed by CDC”); 2) You must utilize a disclaimer which clearly indicates that your use of the material, including any links to the materials on the CDC, ATSDR or HHS websites, does not imply endorsement by CDC, ATSDR, HHS or the United States Government of you, your company, product, facility, service or enterprise. All such disclaimers must be prominently and unambiguously displayed (e.g., “Reference to specific commercial products, manufacturers, companies, or trademarks does not constitute its endorsement or recommendation by the U.S. Government, Department of Health and Human Services, or Centers for Disease Control and Prevention; 3) You may not change the substantive content of the materials; and 4) You must state that the material is otherwise available on the agency website for no charge. Note: Many of CDC’s on-line publications are continually updated as the agency learns more about a specific disease or condition. Occasionally, sites that copy and re-post CDC materials fail to check for updates, which may result in out-of-date information being offered to users. For that reason, we urge you to link directly to our resource documents rather than re-posting. If you do re-post, please check back periodically to see if there are revisions. Linking to CDC, ATSDR or HHS content should open up a new browser window to our site/page. CDC content should not appear within the original window, framed by the existing site." |
