ArticleBuilding and environment2021
Investigation of potential aerosol transmission and infectivity of SARS-CoV-2 through central ventilation systems.
Article in Building and environment, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.
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
25 citing papers in PubMed, 89 citations in OpenAlex.
- Article
- Implemented indoor airborne transmission mitigation strategies during COVID-19: a systematic review.Journal of environmental health science & engineering · 2023Review
- Investigation on the cross-infection control performance of interactive cascade ventilation in multi-scenario of winter.Journal of building engineering · 2023Article
- A review on indoor airborne transmission of COVID-19- modelling and mitigation approaches.Journal of building engineering · 2023Review
- Control technologies to prevent aerosol-based disease transmission in animal agriculture production settings: a review of established and emerging approaches.Frontiers in veterinary science · 2023Review
- Integrated system of exhaust air heat pump and advanced air distribution for energy-efficient provision of outdoor air.Applied thermal engineering · 2022Article
- Modeling impacts of ventilation and filtration methods on energy use and airborne disease transmission in classrooms.Journal of building engineering · 2022Article
- Viable SARS-CoV-2 Delta variant detected in aerosols in a residential setting with a self-isolating college student with COVID-19.Journal of aerosol science · 2022Article
- Ventilation strategies to reduce airborne transmission of viruses in classrooms: A systematic review of scientific literature.Building and environment · 2022Review
- In-duct grating-like dielectric barrier discharge system for air disinfection.Journal of hazardous materials · 2022Article
- Role of ventilation on the transmission of viruses in buildings, from a single zone to a multizone approach.Indoor air · 2022Article
- Tradeoffs among indoor air quality, financial costs, and COBuilding and environment · 2022Article
- Evaluating SARS-CoV-2 airborne quanta transmission and exposure risk in a mechanically ventilated multizone office building.Building and environment · 2022Article
- Ventilation strategies and design impacts on indoor airborne transmission: A review.Building and environment · 2022Review
- Experimental testing of air filter efficiency against the SARS-CoV-2 virus: The role of droplet and airborne transmission.Building and environment · 2022Article
- Reduction of exposure to simulated respiratory aerosols using ventilation, physical distancing, and universal masking.Indoor air · 2022Article
- Simulation Studies Provide Evidence of Aerosol Transmission of SARS-CoV-2 in a Multi-Story Building via Air Supply, Exhaust and Sanitary Pipelines.International journal of environmental research and public health · 2022Article
- Research on the relationship between architectural features in northeast China and vertical aerosol transmission of COVID-19.Frontiers in public health · 2022Article
- Comparison of COVID-19 infection risks through aerosol transmission in supermarkets and small shops.Sustainable cities and society · 2022Article
- Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The COVID-19 pandemic has raised concern of viral spread within buildings. Although near-field transmission and infectious spread within individual rooms are well studied, the impact of aerosolized spread of SARS-CoV-2 via air handling systems within multiroom buildings remains unexplored. This study evaluates the concentrations and probabilities of infection for both building interior and exterior exposure sources using a well-mixed model in a multiroom building served by a central air handling system (without packaged terminal air conditioning). In particular, we compare the influence of filtration, air change rates, and the fraction of outdoor air. When the air supplied to the rooms comprises both outdoor air and recirculated air, we find filtration lowers the concentration and probability of infection the most in connected rooms. We find that increasing the air change rate removes virus from the source room faster but also increases the rate of exposure in connected rooms. Therefore, slower air change rates reduce infectivity in connected rooms at shorter durations. We further find that increasing the fraction of virus-free outdoor air is helpful, unless outdoor air is infective in which case pathogen exposure inside persists for hours after a short-term release. Increasing the outdoor air to 33% or the filter to MERV-13 decreases the infectivity in the connected rooms by 19% or 93% respectively, relative to a MERV-8 filter with 9% outdoor air based on 100 quanta/h of 5 μm droplets, a breathing rate of 0.48 m
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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.