Evidence map›Paper›PMID 35620999›Full record

ArticleEuro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin2022

Investigation of a COVID-19 outbreak on the Charles de Gaulle aircraft carrier, March to April 2020: a retrospective cohort study.

Franck de Laval, Hervé Chaudet, Olivier Gorgé, Joffrey Marchi, Constance Lacrosse, Aissata Dia, Vanessa Marbac, Bakridine Mmadi Mrenda, Gaëtan Texier, Flavie Letois and 11 more

Abstract read
In one paragraph

Article in Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

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

  1. Pooled it
  2. Review
  3. Methodology of Epidemic Risk Analysis in the Naval Military.International journal of environmental research and public health · 2025
    Review
  4. Review
  5. Article
  6. Article
  7. 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

21 authors.

Franck de LavalFrench Armed Forces Center for Epidemiology and Public Health (CESPA), Marseille, France.
Hervé ChaudetFrench Armed Forces Center for Epidemiology and Public Health (CESPA), Marseille, France.
Olivier GorgéFrench Armed Forces Biomedical Research Institute (IRBA), Brétigny-sur-Orge, France.
Joffrey MarchiFrench Armed Forces Center for Epidemiology and Public Health (CESPA), Marseille, France.
Constance LacrosseFrench Armed Forces Center for Epidemiology and Public Health (CESPA), Marseille, France.
Aissata DiaFrench Armed Forces Center for Epidemiology and Public Health (CESPA), Marseille, France.
Vanessa MarbacFrench Military Health Service, Toulon, France.
Bakridine Mmadi MrendaFrench Armed Forces Center for Epidemiology and Public Health (CESPA), Marseille, France.
Gaëtan TexierFrench Armed Forces Center for Epidemiology and Public Health (CESPA), Marseille, France.
Flavie LetoisFrench Armed Forces Center for Epidemiology and Public Health (CESPA), Marseille, France.
Charles ChapusFrench Armed Forces Biomedical Research Institute (IRBA), Brétigny-sur-Orge, France.
Véronique SarilarFrench Armed Forces Biomedical Research Institute (IRBA), Brétigny-sur-Orge, France.
Jean-Nicolas TournierFrench Armed Forces Biomedical Research Institute (IRBA), Brétigny-sur-Orge, France.
Anthony LevasseurUniversity Hospital Institute Méditerranée Infection, Marseille, France.
Jacques CobolaFrench Military Health Service, Toulon, France.
Flora NolentFrench Armed Forces Biomedical Research Institute (IRBA), Brétigny-sur-Orge, France.
Fabien DutastaSainte-Anne Military Teaching Hospital, Toulon, France.
Frédéric JanvierSainte-Anne Military Teaching Hospital, Toulon, France.
PA-CDG COVID-19 investigation groupPA-CDG COVID-19 investigation group members are listed under Collaborators.
Jean-Baptiste MeynardFrench Armed Forces Center for Epidemiology and Public Health (CESPA), Marseille, France.
Vincent Pommier de SantiFrench Armed Forces Center for Epidemiology and Public Health (CESPA), Marseille, France.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BackgroundSARS-CoV-2 emergence was a threat for armed forces. A COVID-19 outbreak occurred on the French aircraft carrier Charles de Gaulle from mid-March to mid-April 2020.AimTo understand how the virus was introduced, circulated then stopped circulation, risk factors for infection and severity, and effectiveness of preventive measures.MethodsWe considered the entire crew as a cohort and collected personal, clinical, biological, and epidemiological data. We performed viral genome sequencing and searched for SARS-CoV-2 in the environment.ResultsThe attack rate was 65% (1,148/1,767); 1,568 (89%) were included. The male:female ratio was 6.9, and median age was 29 years (IQR: 24-36). We examined four clinical profiles: asymptomatic (13.0%), non-specific symptomatic (8.1%), specific symptomatic (76.3%), and severe (i.e. requiring oxygen therapy, 2.6%). Active smoking was not associated with severe COVID-19; age and obesity were risk factors. The instantaneous reproduction rate (R

Indexed as

COVID-19AdultAircraftDisease OutbreaksFemaleHumansMaleRetrospective StudiesSARS-CoV-2Aircraft CarrierOutbreakSARS-CoV-2, COVID-19Ship, Herd immunity

Identifiers

PMID35620999
PMCPMC9137271

What OpenQuestion holds

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LicenceCC BY
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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.