ArticleRisk analysis : an official publication of the Society for Risk Analysis2014
Validation and application of models to predict facemask influenza contamination in healthcare settings.
Article in Risk analysis : an official publication of the Society for Risk Analysis, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 2 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
17 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Microwave- and heat-based decontamination of N95 filtering facepiece respirators: a systematic review.The Journal of hospital infection · 2020Pooled it
- Decontamination interventions for the reuse of surgical mask personal protective equipment: a systematic review.The Journal of hospital infection · 2020Pooled it
- A cluster randomised trial of cloth masks compared with medical masks in healthcare workers.BMJ open · 2015Trial
- Effectiveness of germicidal ultraviolet light to inactivate coronaviruses on personal protective equipment to reduce nosocomial transmission.Infection control and hospital epidemiology · 2022Article
- Evaluating fomite risk of brown paper bags storing personal protective equipment exposed to SARS-CoV-2: A quasi-experimental study.PloS one · 2022Article
- Rationale and process for N95 respirator sanitation and reuse in the coronavirus disease 2019 (COVID-19) pandemic.Infection control and hospital epidemiology · 2022Article
- Persistence of SARS-Co-V-2 on N95 filtering facepiece respirators: implications for reuse.Journal of occupational and environmental hygiene · 2021Article
- Mapping of UV-C dose and SARS-CoV-2 viral inactivation across N95 respirators during decontamination.Scientific reports · 2021Article
- Retracted: Facemasks in the COVID-19 era: A health hypothesis.Medical hypotheses · 2021Review
- A scoping review of surgical masks and N95 filtering facepiece respirators: Learning from the past to guide the future of dentistry.Safety science · 2020Article
- Decontaminating N95 and SN95 masks with ultraviolet germicidal irradiation does not impair mask efficacy and safety.The Journal of hospital infection · 2020Review
- AGA Rapid Recommendations for Gastrointestinal Procedures During the COVID-19 Pandemic.Gastroenterology · 2020Review
- Effect of various decontamination procedures on disposable N95 mask integrity and SARS-CoV-2 infectivity.Journal of clinical and translational science · 2020Article
- Assessment of influenza virus exposure and recovery from contaminated surgical masks and N95 respirators.Journal of virological methods · 2018Article
- Ultraviolet germicidal irradiation of influenza-contaminated N95 filtering facepiece respirators.American journal of infection control · 2018Article
- Assessment of half-mask elastomeric respirator and powered air-purifying respirator reprocessing for an influenza pandemic.American journal of infection control · 2017Article
- Considerations for recommending extended use and limited reuse of filtering facepiece respirators in health care settings.Journal of occupational and environmental hygiene · 2014Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
Abstract
Facemasks are part of the hierarchy of interventions used to reduce the transmission of respiratory pathogens by providing a barrier. Two types of facemasks used by healthcare workers are N95 filtering facepiece respirators (FFRs) and surgical masks (SMs). These can become contaminated with respiratory pathogens during use, thus serving as potential sources for transmission. However, because of the lack of field studies, the hazard associated with pathogen-exposed facemasks is unknown. A mathematical model was used to calculate the potential influenza contamination of facemasks from aerosol sources in various exposure scenarios. The aerosol model was validated with data from previous laboratory studies using facemasks mounted on headforms in a simulated healthcare room. The model was then used to estimate facemask contamination levels in three scenarios generated with input parameters from the literature. A second model estimated facemask contamination from a cough. It was determined that contamination levels from a single cough (≈19 viruses) were much less than likely levels from aerosols (4,473 viruses on FFRs and 3,476 viruses on SMs). For aerosol contamination, a range of input values from the literature resulted in wide variation in estimated facemask contamination levels (13-202,549 viruses), depending on the values selected. Overall, these models and estimates for facemask contamination levels can be used to inform infection control practice and research related to the development of better facemasks, to characterize airborne contamination levels, and to assist in assessment of risk from reaerosolization and fomite transfer because of handling and reuse of contaminated facemasks.
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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.