Evidence map›Paper›PMID 33950040›Full record

ArticleJournal of occupational and environmental medicine2021

COVID-19 Workplace Outbreaks by Industry Sector and Their Associated Household Transmission, Ontario, Canada, January to June, 2020.

Michelle Murti, Camille Achonu, Brendan T Smith, Kevin A Brown, Jin Hee Kim, James Johnson, Saranyah Ravindran, Sarah A Buchan

Abstract read
In one paragraph

Article in Journal of occupational and environmental medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

34 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Missing Occupation, Missing Risk: Insights From COVID-19 Case Investigation Data in Busan, South Korea.Journal of preventive medicine and public health = Yebang Uihakhoe chi · 2026
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  14. Canadian COVID-19 Outbreak Surveillance System: implementation of national surveillance during a global pandemic.Canadian journal of public health = Revue canadienne de sante publique · 2023
    Article
  15. COVID-19 farm outbreaks in Ontario, January-December 2020.Canada communicable disease report = Releve des maladies transmissibles au Canada · 2023
    Article
  16. COVID-19-related hospital admission in spouses of partners in at-risk occupations.Scandinavian journal of work, environment & health · 2023
    Article
  17. Article
  18. COVID-19 outbreak trends in Canada, 2021.Canada communicable disease report = Releve des maladies transmissibles au Canada · 2023
    Article
  19. Article
  20. 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

8 authors.

Michelle MurtiPublic Health Ontario, Toronto, Ontario, Canada (Dr Murti, Ms Achonu, Dr Smith, Dr Brown, Dr Kim, Mr Johnson, Ms Ravindran, and Dr Buchan); Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada (Dr Murti, Dr Smith, Dr Kim, and Dr Buchan).
Camille Achonu
Brendan T Smith
Kevin A Brown
Jin Hee Kim
James Johnson
Saranyah Ravindran
Sarah A Buchan

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo analyze workplace outbreaks by industry sector in the first wave of the pandemic, and associated household cases.

methodsNumber, size, and duration of outbreaks were described by sector, and outbreak cases were compared to sporadic cases in the same time frame. Address matching identified household cases with onset ≥2 days before, ≥2 days after, or within 1 day of the workplace outbreak case.

resultsThere were 199 outbreaks with 1245 cases, and 68% of outbreaks and 80% of cases belonged to (1) Manufacturing, (2) Agriculture, Forestry, Fishing, Hunting, (3) Transportation and Warehousing. There were 608 household cases associated with 339 (31%) outbreak cases, increasing the burden of illness by 56%.

conclusionsWorkplace outbreaks primarily occurred in three sectors. Prevention measures should target industry sectors at risk to prevent spread in and out of the workplace.

Indexed as

WorkplaceAdolescentAdultAgedAged, 80 and overCOVID-19Disease OutbreaksFemaleHumansMaleMiddle AgedOntarioPandemicsPublic Health SurveillanceSARS-CoV-2Young Adult

Identifiers

PMID33950040
PMCPMC8247533

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.