Evidence map›Paper›PMID 35062291›Full record

ArticleViruses2022

Investigation of a Limited but Explosive COVID-19 Outbreak in a German Secondary School.

Sigrid Baumgarte, Felix Hartkopf, Martin Hölzer, Max von Kleist, Sabine Neitz, Martin Kriegel, Kirsten Bollongino

Abstract read
In one paragraph

Article in Viruses, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 2 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

16 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Non-pharmaceutical interventions for COVID-19: a systematic review on environmental control measures.Philosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2023
    Pooled it
  3. Article
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  8. Observational
  9. Risk factors for SARS-CoV-2 infection in primary and secondary school students and staff in England in the 2020/2021 school year: a longitudinal study.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2023
    Article
  10. Article
  11. The Influence of Ventilation Measures on the Airborne Risk of Infection in Schools: A Scoping Review.International journal of environmental research and public health · 2023
    Article
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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

7 authors.

Sigrid BaumgarteInfection Protection, Local Health Authority Hamburg-Nord, 20249 Hamburg, Germany.ORCID 0000-0003-2362-6834
Felix HartkopfMethodology and Research Infrastructure, Genome Sequencing and Genomic Epidemiology, Robert Koch Institute, 13353 Berlin, Germany.ORCID 0000-0002-3902-8524
Martin HölzerMethodology and Research Infrastructure, Bioinformatics, Robert Koch Institute, 13353 Berlin, Germany.ORCID 0000-0001-7090-8717
Max von KleistSystems Medicine of Infectious Disease, Robert Koch Institute, 13353 Berlin, Germany.ORCID 0000-0001-6587-6394
Sabine NeitzInfection Protection, Local Health Authority Hamburg-Nord, 20249 Hamburg, Germany.
Martin KriegelHerrmann Rietschel-Institute, Technical University of Berlin, 10587 Berlin, Germany.
Kirsten BollonginoInfection Protection, Local Health Authority Hamburg-Nord, 20249 Hamburg, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The role of schools as a source of infection and driver in the coronavirus-pandemic has been controversial and is still not completely clarified. To prevent harm and disadvantages for children and adolescents, but also adults, detailed data on school outbreaks is needed, especially when talking about open schools employing evidence-based safety concepts. Here, we investigated the first significant COVID-19 school outbreak in Hamburg, Germany, after the re-opening of schools in 2020. Using clinical, laboratory, and contact data and spatial measures for epidemiological and environmental studies combined with whole-genome sequencing (WGS) analysis, we examined the causes and the course of the secondary school outbreak. The potential index case was identified by epidemiological tracking and the lessons in classrooms with presumably high virus spreading rates and further infection chains in the setting. Sequence analysis of samples detected one sample of a different virus lineage and 25 virus genomes with almost identical sequences, of which 21 showed 100% similarity. Most infections occurred in connection with two lesson units of the primary case. Likely, 31 students (12-14 years old), two staff members, and three family members were infected in the school or the typical household. Sequence analysis revealed an outbreak cluster with a single source that was epidemiologically identified as a member of the educational staff. In lesson units, two superspreading events of varying degrees with airborne transmission took place. These were influenced by several parameters including the exposure times, the use of respiratory masks while speaking and spatial or structural conditions at that time.

Indexed as

Disease OutbreaksSchoolsContact TracingCOVID-19Educational PersonnelFamilyFemaleGenome, ViralGermanyHumansMalePhylogenyQuarantineRisk FactorsSARS-CoV-2Studentsaerosolsnon-pharmaceutical interventionsSARS-CoV-2school outbreaksuperspreading event

Identifiers

PMID35062291
PMCPMC8780098

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.