Evidence map›Paper›PMID 34850051›Full record

ArticleThe Journal of infectious diseases2022

Surface and Air Contamination With Severe Acute Respiratory Syndrome Coronavirus 2 From Hospitalized Coronavirus Disease 2019 Patients in Toronto, Canada, March-May 2020.

Jonathon D Kotwa, Alainna J Jamal, Hamza Mbareche, Lily Yip, Patryk Aftanas, Shiva Barati, Natalie G Bell, Elizabeth Bryce, Eric Coomes, Gloria Crowl and 25 more

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of infectious diseases, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 2 pooled it
3.8field-weighted citation impact, top 5% of its field
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

24 citing papers in PubMed, 2 syntheses or guidelines pooled it, 35 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. COVID-19 Alters Inflammatory, Mitochondrial, and Protein Clearance Pathway Genes: Potential Implications for New-onset Parkinsonism in Patients.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2025
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  11. Air Change Rate and SARS-CoV-2 Exposure in Hospitals and Residences: A Meta-Analysis.Aerosol science and technology : the journal of the American Association for Aerosol Research · 2024
    Article
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  20. Viable SARS-CoV-2 detected in the air of hospital rooms of patients with COVID-19 with an early infection.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2023
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

35 authors at 8 institutions in 1 country.

Jonathon D KotwaSunnybrook Research Institute, Toronto, Ontario, Canada.ORCID 0000-0002-6424-3947
Alainna J JamalSinai Health System, Toronto, Ontario, Canada.
Hamza MbarecheSunnybrook Research Institute, Toronto, Ontario, Canada.
Lily YipSunnybrook Research Institute, Toronto, Ontario, Canada.
Patryk AftanasSunnybrook Research Institute, Toronto, Ontario, Canada.
Shiva BaratiSinai Health System, Toronto, Ontario, Canada.
Natalie G BellSunnybrook Research Institute, Toronto, Ontario, Canada.
Elizabeth BryceDivision of Medical Microbiology and Infection Prevention, Vancouver Coastal Health, Vancouver, British Colombia, Canada.
Eric CoomesFaculty of Medicine, University of Toronto, Toronto, Ontario, Canada.
Gloria CrowlSinai Health System, Toronto, Ontario, Canada.
Caroline DuchaineCentre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec - Université de Laval, Québec City, Québec, Canada.
Amna FaheemSinai Health System, Toronto, Ontario, Canada.
Lubna FarooqiSinai Health System, Toronto, Ontario, Canada.
Ryan HiebertSunnybrook Research Institute, Toronto, Ontario, Canada.
Kevin KatzNorth York General Hospital, Toronto, Ontario, Canada.
Saman KhanSinai Health System, Toronto, Ontario, Canada.
Robert KozakSunnybrook Research Institute, Toronto, Ontario, Canada.
Angel X LiSinai Health System, Toronto, Ontario, Canada.
Henna P MistrySunnybrook Research Institute, Toronto, Ontario, Canada.
Mohammad MozafarihashjinSinai Health System, Toronto, Ontario, Canada.
Jalees A NasirMichael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, Canada.
Kuganya NirmalarajahSunnybrook Research Institute, Toronto, Ontario, Canada.
Emily M PanousisMichael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, Canada.
Aimee PatersonSinai Health System, Toronto, Ontario, Canada.
Simon PlenderleithSunnybrook Research Institute, Toronto, Ontario, Canada.
Jeff PowisMichael Garron Hospital, Toronto, Ontario, Canada.
Karren ProstSunnybrook Research Institute, Toronto, Ontario, Canada.
Renée SchryerSunnybrook Research Institute, Toronto, Ontario, Canada.
Maureen TaylorMichael Garron Hospital, Toronto, Ontario, Canada.
Marc VeilletteCentre de Recherche de l'Institut Universitaire de Cardiologie et de Pneumologie de Québec - Université de Laval, Québec City, Québec, Canada.
Titus WongDivision of Medical Microbiology and Infection Prevention, Vancouver Coastal Health, Vancouver, British Colombia, Canada.
Xi Zoe ZhongSinai Health System, Toronto, Ontario, Canada.
Andrew G McArthurMichael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario, Canada.
Allison J McGeerSinai Health System, Toronto, Ontario, Canada.
Samira MubarekaSunnybrook Research Institute, Toronto, Ontario, Canada.
Sunnybrook Hospital · CASinai Health System · CAMcMaster University · CAUniversity of Toronto · CAInstitut universitaire de cardiologie et de pneumologie de Québec · CAToronto East General Hospital · CAVancouver Coastal Health · CANorth York General Hospital · CA

Funding

Canadian COVID Genomics NetworkCIHR RN419944-439999
6 · The paper itself

Abstract

backgroundWe determined the burden of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in air and on surfaces in rooms of patients hospitalized with coronavirus disease 2019 (COVID-19) and investigated patient characteristics associated with SARS-CoV-2 environmental contamination.

methodsNasopharyngeal swabs, surface, and air samples were collected from the rooms of 78 inpatients with COVID-19 at 6 acute care hospitals in Toronto from March to May 2020. Samples were tested for SARS-CoV-2 ribonucleic acid (RNA), cultured to determine potential infectivity, and whole viral genomes were sequenced. Association between patient factors and detection of SARS-CoV-2 RNA in surface samples were investigated.

resultsSevere acute respiratory syndrome coronavirus 2 RNA was detected from surfaces (125 of 474 samples; 42 of 78 patients) and air (3 of 146 samples; 3 of 45 patients); 17% (6 of 36) of surface samples from 3 patients yielded viable virus. Viral sequences from nasopharyngeal and surface samples clustered by patient. Multivariable analysis indicated hypoxia at admission, polymerase chain reaction-positive nasopharyngeal swab (cycle threshold of ≤30) on or after surface sampling date, higher Charlson comorbidity score, and shorter time from onset of illness to sampling date were significantly associated with detection of SARS-CoV-2 RNA in surface samples.

conclusionsThe infrequent recovery of infectious SARS-CoV-2 virus from the environment suggests that the risk to healthcare workers from air and near-patient surfaces in acute care hospital wards is likely limited.

Indexed as

COVID-19Respiratory Aerosols and DropletsAdultAgedAir MicrobiologyCanadaCOVID-19 Nucleic Acid TestingEnvironmental ExposureHealth PersonnelHumansInpatientsMiddle AgedNasopharynxPandemicsSARS-CoV-2aerosolcontaminationCOVID-19SARS-CoV-2surface

Identifiers

PMID34850051
PMCPMC8767887
OpenAlexW3215759262

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.