Evidence map›Paper›PMID 35834166›Full record

ArticleCanadian journal of public health = Revue canadienne de sante publique2022

Transmission dynamics of SARS-CoV-2 in British Columbia's largest school district during the second half of the 2020-2021 school year.

Laurence Campeau, Frances Thistlethwaite, Jiayun Angela Yao, Amy J Hobbs, Armin Shahriari, Rohit Vijh, Carmen H Ng, Christina Fung, Shannon Russel, James Zlosnik and 2 more

Abstract read
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 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–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

3 citing papers in PubMed.

  1. Article
  2. Article
  3. 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

12 authors.

Laurence CampeauPublic Health Agency of Canada, Ottawa, Ontario, Canada. laurence.campeau@phac-aspc.gc.ca.ORCID 0000-0002-8675-0317
Frances ThistlethwaiteOffice of the Medical Health Officer, Fraser Health, Surrey, British Columbia, Canada.
Jiayun Angela YaoOffice of the Medical Health Officer, Fraser Health, Surrey, British Columbia, Canada.
Amy J HobbsOffice of the Medical Health Officer, Fraser Health, Surrey, British Columbia, Canada.
Armin ShahriariOffice of the Medical Health Officer, Fraser Health, Surrey, British Columbia, Canada.
Rohit VijhSchool of Population and Public Health, University of British Columbia, Vancouver, British Columbia, Canada.
Carmen H NgOffice of the Medical Health Officer, Fraser Health, Surrey, British Columbia, Canada.
Christina FungOffice of the Medical Health Officer, Fraser Health, Surrey, British Columbia, Canada.
Shannon RusselBritish Columbia Centre for Disease Control Public Health Laboratory, Vancouver, British Columbia, Canada.
James ZlosnikBritish Columbia Centre for Disease Control Public Health Laboratory, Vancouver, British Columbia, Canada.
Natalie PrystajeckyBritish Columbia Centre for Disease Control Public Health Laboratory, Vancouver, British Columbia, Canada.
Ariella ZbarOffice of the Medical Health Officer, Fraser Health, Surrey, British Columbia, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo determine the extent and characteristics of in-school transmission of SARS-CoV-2 and determine risk factors for in-school acquisition of COVID-19 in one of Canada's largest school districts.

methodsWe conducted a retrospective chart review of all reportable cases of COVID-19 who attended a kindergarten-Grade 12 (K-12) school within the study area between January and June of the 2020-2021 school year. The acquisition source was inferred based on epidemiological data and, when available, whole genome sequencing results. Mixed effects logistic regression was performed to identify risk factors independently associated with in-school acquisition of COVID-19.

resultsOverall, 2877 cases of COVID-19 among staff and students were included in the analysis; of those, 9.1% had evidence of in-school acquisition. The median cluster size was two cases (interquartile range: 1). Risk factors for in-school acquisition included being male (adjusted odds ratio [aOR]: 1.59, 95% confidence interval [CI]: 1.17-2.17), being a staff member (aOR: 2.62, 95% CI: 1.64-4.21) and attending or working in an independent school (aOR: 2.28, 95% CI: 1.13-4.62).

conclusionIn-school acquisition of COVID-19 was uncommon during the study period. Risk factors were identified in order to support the implementation of mitigation strategies that can reduce transmission further.

Indexed as

COVID-19SARS-CoV-2British ColumbiaFemaleHumansMaleRetrospective StudiesSchoolsCanadaCOVID-19Risk factorsSchools

Identifiers

PMID35834166
PMCPMC9281576

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Registered trials

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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.