Evidence map›Paper›PMID 34919211›Full record

ArticleCanadian journal of public health = Revue canadienne de sante publique2022

Prevalence of SARS-CoV-2 infection among people experiencing homelessness in Toronto during the first wave of the COVID-19 pandemic.

Linh Luong, Michaela Beder, Rosane Nisenbaum, Aaron Orkin, Jonathan Wong, Cynthia Damba, Ryan Emond, Suvendrini Lena, Vanessa Wright, Mona Loutfy and 9 more

Open access · hybridAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Canadian journal of public health = Revue canadienne de sante publique, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 2 pooled it
3.8field-weighted citation impact, top 7% 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

10 citing papers in PubMed, 2 syntheses or guidelines pooled it, 14 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Review
  5. Wastewater surveillance for COVID-19 in shelters: A creative strategy for a complex setting.Canada communicable disease report = Releve des maladies transmissibles au Canada · 2024
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Observational
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

19 authors at 7 institutions in 1 country.

Linh LuongMAP Centre for Urban Health Solutions, Li Ka Shing Knowledge Institute, St Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON, M5B 1W8, Canada.
Michaela BederDepartment of Psychiatry, University of Toronto, Toronto, ON, Canada.
Rosane NisenbaumMAP Centre for Urban Health Solutions, Li Ka Shing Knowledge Institute, St Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON, M5B 1W8, Canada.
Aaron OrkinDepartment of Family and Community Medicine, University of Toronto, Toronto, ON, Canada.
Jonathan WongInner City Health Associates, Toronto, ON, Canada.
Cynthia DambaCentral Local Health Integration Network, Ontario Health Toronto, Toronto, ON, Canada.
Ryan EmondCentral Local Health Integration Network, Ontario Health Toronto, Toronto, ON, Canada.
Suvendrini LenaDepartment of Medicine, Women's College Hospital, Toronto, ON, Canada.
Vanessa WrightDepartment of Family and Community Medicine, Women's College Hospital, Toronto, ON, Canada.
Mona LoutfyWomen's College Research Institute, Women's College Hospital, University of Toronto & Maple Leaf Medical Clinic, Toronto, ON, Canada.
Cindy Bruce-BarrettThe Hospital for Sick Children, Toronto, ON, Canada.
Wilfred CheungCentral Local Health Integration Network, Ontario Health Toronto, Toronto, ON, Canada.
Yick Kan CheungCentral Local Health Integration Network, Ontario Health Toronto, Toronto, ON, Canada.
Victoria WilliamsCentral Local Health Integration Network, Ontario Health Toronto, Toronto, ON, Canada.
Miriam VanmeursCentral Local Health Integration Network, Ontario Health Toronto, Toronto, ON, Canada.
Andrew BoozaryUniversity Health Network, Toronto, ON, Canada.
Harvey ManningAnishnawbe Health Toronto, Toronto, ON, Canada.
Joe HesterAnishnawbe Health Toronto, Toronto, ON, Canada.
Stephen W HwangMAP Centre for Urban Health Solutions, Li Ka Shing Knowledge Institute, St Michael's Hospital, Unity Health Toronto, 30 Bond Street, Toronto, ON, M5B 1W8, Canada. Stephen.Hwang@unityhealth.to.
St. Michael's Hospital · CAUniversity of Toronto · CAWomen's College Hospital · CACentre for Addiction and Mental Health · CAHospital for Sick Children · CAUnity Health TorontoUniversity Health Network · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesPeople experiencing homelessness are at increased risk of SARS-CoV-2 infection. This study reports the point prevalence of SARS-CoV-2 infection during testing conducted at sites serving people experiencing homelessness in Toronto during the first wave of the COVID-19 pandemic. We also explored the association between site characteristics and prevalence rates.

methodsThe study included individuals who were staying at shelters, encampments, COVID-19 physical distancing sites, and drop-in and respite sites and completed outreach-based testing for SARS-CoV-2 during the period April 17 to July 31, 2020. We examined test positivity rates over time and compared them to rates in the general population of Toronto. Negative binomial regression was used to examine the relationship between each shelter-level characteristic and SARS-CoV-2 positivity rates. We also compared the rates across 3 time periods (T1: April 17-April 25; T2: April 26-May 23; T3: May 24-June 25).

resultsThe overall prevalence of SARS-CoV-2 infection was 8.5% (394/4657). Site-specific rates showed great heterogeneity with infection rates ranging from 0% to 70.6%. Compared to T1, positivity rates were 0.21 times lower (95% CI: 0.06-0.75) during T2 and 0.14 times lower (95% CI: 0.04-0.44) during T3. Most cases were detected during outbreak testing (384/394 [97.5%]) rather than active case finding.

conclusionDuring the first wave of the pandemic, rates of SARS-CoV-2 infection at sites for people experiencing homelessness in Toronto varied significantly over time. The observation of lower rates at certain sites may be attributable to overall time trends, expansion of outreach-based testing to include sites without known outbreaks, and/or individual site characteristics.

Indexed as

COVID-19Ill-Housed PersonsHumansPandemicsPrevalenceSARS-CoV-2COVID-19 pandemicHomelessnessHomeless sheltersVulnerable populations

Identifiers

PMID34919211
PMCPMC8678973
OpenAlexW4226057701

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.