ArticleAmerican journal of infection control2022
Face mask fit modifications that improve source control performance.
Article in American journal of infection control, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
11 citing papers in PubMed, 43 citations in OpenAlex.
- Children's preferences for features and designs of KN95-style respirators: A comparative study between Indonesia and Nepal.PloS one · 2025Article
- Measuring the fitted filtration efficiency of cloth masks, medical masks and respirators.PloS one · 2025Article
- Analysis of two sequential SARS-CoV-2 outbreaks on a haematology-oncology ward and the role of infection prevention.Infection prevention in practice · 2024Article
- Effect of Face Masking on Transmission of SARS-CoV-2.Advances in experimental medicine and biology · 2024Article
- Effect of distributing locally produced cloth facemasks on COVID-19-like illness and all-cause mortality-a cluster-randomised controlled trial in urban Guinea-Bissau.PLOS global public health · 2024Article
- Article
- Automated Adjustment of PPE Masks Using IoT Sensor Fusion.Sensors (Basel, Switzerland) · 2023Article
- Constant vs. cyclic flow when testing face masks and respirators as source control devices for simulated respiratory aerosols.Aerosol science and technology : the journal of the American Association for Aerosol Research · 2023Article
- Assessment of Different Experimental Setups to Determine Viral Filtration Efficiency of Face Masks.International journal of environmental research and public health · 2022Article
- Detection of hospital environmental contamination during SARS-CoV-2 Omicron predominance using a highly sensitive air sampling device.Frontiers in public health · 2022Article
- What We Are Learning from COVID-19 for Respiratory Protection: Contemporary and Emerging Issues.Polymers · 2021Review
Corrections and comments
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Authors and funding
13 authors at 3 institutions in 1 country.
Funding
Abstract
backgroundDuring the COVID-19 pandemic, face masks are used as source control devices to reduce the expulsion of respiratory aerosols from infected people. Modifications such as mask braces, earloop straps, knotting and tucking, and double masking have been proposed to improve mask fit however the data on source control are limited.
methodsThe effectiveness of mask fit modifications was determined by conducting fit tests on human subjects and simulator manikins and by performing simulated coughs and exhalations using a source control measurement system.
resultsMedical masks without modification blocked ≥56% of cough aerosols and ≥42% of exhaled aerosols. Modifying fit by crossing the earloops or placing a bracket under the mask did not increase performance, while using earloop toggles, an earloop strap, and knotting and tucking the mask increased performance. The most effective modifications for improving source control performance were double masking and using a mask brace. Placing a cloth mask over a medical mask blocked ≥85% of cough aerosols and ≥91% of exhaled aerosols. Placing a brace over a medical mask blocked ≥95% of cough aerosols and ≥99% of exhaled aerosols.
conclusionsFit modifications can greatly improve the performance of face masks as source control devices for respiratory aerosols.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.