Evidence map›Paper›PMID 34651571›Full record

ArticleEuro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin2021

COVID-19 outbreak among French firefighters, Marseille, France, 2020.

Guillaume André Durand, Franck de Laval, Albane de Bonet d'Oléon, François Xavier Le Flem, Yann Morin, Cyril Badaut, Gilda Grard, Constance Brossier, Marion Fossier, Aissata Dia and 7 more

Abstract read
In one paragraph

Article in Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin, 2021. 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. Review
  3. Investigation of a COVID-19 outbreak on the Charles de Gaulle aircraft carrier, March to April 2020: a retrospective cohort study.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2022
    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

17 authors.

Guillaume André DurandFrench Armed Forces Biomedical Research Institute, National Reference Laboratory for Arboviruses, Marseille, France.
Franck de LavalFrench Military Health Service, French Armed Forces Centre for Epidemiology and Public Health (CESPA), Marseille, France.
Albane de Bonet d'OléonFrench Military Health Service, French Armed Forces Centre for Epidemiology and Public Health (CESPA), Marseille, France.
François Xavier Le FlemMarseille Battalion of Navy Firefighters, 9 boulevard de Strasbourg, 13233 Marseille Cedex 20, France.
Yann MorinFrench Military Health Service, French Armed Forces Centre for Epidemiology and Public Health (CESPA), Marseille, France.
Cyril BadautUnité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190-Inserm 1207), Marseille, France.
Gilda GrardFrench Armed Forces Biomedical Research Institute, National Reference Laboratory for Arboviruses, Marseille, France.
Constance BrossierFrench Military Health Service, French Armed Forces Centre for Epidemiology and Public Health (CESPA), Marseille, France.
Marion FossierFrench Military Health Service, French Armed Forces Centre for Epidemiology and Public Health (CESPA), Marseille, France.
Aissata DiaFrench Military Health Service, French Armed Forces Centre for Epidemiology and Public Health (CESPA), Marseille, France.
Flavie LetoisFrench Military Health Service, French Armed Forces Centre for Epidemiology and Public Health (CESPA), Marseille, France.
Manon GeulenFrench Armed Forces Biomedical Research Institute, National Reference Laboratory for Arboviruses, Marseille, France.
Géraldine PiorkowskiUnité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190-Inserm 1207), Marseille, France.
Jean-Baptiste MeynardFrench Military Health Service, French Armed Forces Centre for Epidemiology and Public Health (CESPA), Marseille, France.
Frank PeduzziMarseille Battalion of Navy Firefighters, 9 boulevard de Strasbourg, 13233 Marseille Cedex 20, France.
Isabelle Leparc-GoffartFrench Armed Forces Biomedical Research Institute, National Reference Laboratory for Arboviruses, Marseille, France.
Vincent Pommier de SantiFrench Military Health Service, French Armed Forces Centre for Epidemiology and Public Health (CESPA), Marseille, France.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We investigated a COVID-19 outbreak at a fire station in Marseille, France. Confirmed cases were defined as individuals with positive SARS-CoV-2 reverse transcription (RT)-PCR and/or neutralising antibodies. All 85 firefighters at work during the outbreak period were included after questioning and sampled for RT-PCR and viral neutralisation assay. Twenty-three firefighters were confirmed positive, 19 of them were symptomatic, and four asymptomatic cases were confirmed by virus neutralisation. A total of 22 firefighters had specific neutralising antibodies against SARS-CoV-2. Neutralising antibodies were found in four asymptomatic and 18 symptomatic cases. Eleven symptomatic cases had high titres (≥ 1:80). The earliest detection of neutralising antibodies was 7 days after symptom onset, and 80% had neutralising antibodies 15 days after onset. One viral culture was positive 13 days after onset. The attack rate was 27%. We identified two introductions of the virus in this outbreak, through a presymptomatic and a paucisymptomatic case. Asymptomatic cases were not the source of a third generation of cases, although they worked without wearing a mask, indicating that asymptomatic cases did not play a significant role in this outbreak. Management and strategy based on early research of clinical signs associated with self-quarantine was effective.

Indexed as

COVID-19FirefightersDisease OutbreaksFranceHumansSARS-CoV-2asymptomaticCOVID-19neutralisation assaypresymptomaticSARS-CoV-2serology

Identifiers

PMID34651571
PMCPMC8518307

What OpenQuestion holds

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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.