Evidence map›Paper›PMID 34525096›Full record

Trial reportPloS one2021

Seroprevalence of SARS-CoV-2 antibodies among homeless people living rough, in shelters and squats: A large population-based study in France.

Sandrine Loubiere, Elisabetta Monfardini, Camille Allaria, Marine Mosnier, Agathe Allibert, Laetitia Ninove, Thomas Bosetti, Cyril Farnarier, Ilyes Hamouda, Pascal Auquier and 2 more

Open access · goldAbstract readClinical Trial
In one paragraph

Trial report in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 3 pooled it
1.7field-weighted citation impact, top 13% of its field
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

22 citing papers in PubMed, 3 syntheses or guidelines pooled it, 29 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
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  4. Article
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  7. [Health of homeless individuals during the COVID-19 pandemic].Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz · 2023
    Review
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  12. Observational
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  17. Severe Acute Respiratory Syndrome Coronavirus 2 Reinfection Associates With Unstable Housing and Occurs in the Presence of Antibodies.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2022
    Article
  18. Article
  19. 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

12 authors at 6 institutions in 1 country.

Sandrine LoubiereDepartment of Research and Innovation, Assistance Publique Hôpitaux de Marseille - APHM, Marseille, France.ORCID 0000-0001-6715-1223
Elisabetta MonfardiniDepartment of Psychiatry, Sainte-Marguerite University Hospital, APHM, Marseille, France.
Camille AllariaCEReSS: Health Service Research and Quality of Life Center, Aix Marseille University, Marseille, France.
Marine MosnierMédecins du Monde, Marseille, France.
Agathe AllibertDepartment of Research and Innovation, Assistance Publique Hôpitaux de Marseille - APHM, Marseille, France.
Laetitia NinoveUnité des Virus Emergents (UVE), Aix-Marseille Univ - IRD 190 - Inserm 1207 -IHU Méditerranée Infection, Marseille, France.
Thomas BosettiMédecins du Monde, Marseille, France.
Cyril FarnarierProjet ASSAb - Accès aux Soins pour les Personnes Sans Abri, Hôpital Européen, Marseille, France.
Ilyes HamoudaDepartment of Research and Innovation, Assistance Publique Hôpitaux de Marseille - APHM, Marseille, France.
Pascal AuquierDepartment of Research and Innovation, Assistance Publique Hôpitaux de Marseille - APHM, Marseille, France.
Emilie MosnierINSERM, IRD, SESSTIM, Sciences Economiques & Sociales de la Santé & Traitement de l'Information Médicale, Aix Marseille University, Marseille, France.
Aurélie TinlandCEReSS: Health Service Research and Quality of Life Center, Aix Marseille University, Marseille, France.
Aix-Marseille Université · FRAssistance Publique Hôpitaux de Marseille · FRInserm · FRInstitut des Mondes Africains · FRCentre National de la Recherche Scientifique · FRHôpital Européen · FR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundOvercrowded housing, as well as inadequate sanitary conditions, contribute to making homeless people particularly vulnerable to the SARS-CoV-2 infection. We aimed to assess the seroprevalence of the SARS-CoV-2 infection among people experiencing homelessness on a large city-wide scale in Marseille, France, taking into account different types of accommodation.

methodsA consortium of outreach teams in 48 different locations including streets, slums, squats, emergency or transitional shelters and drop-in centres participated in the inclusion process. All participants consented to have a validated rapid antibody assay for immunoglobulins M (IgM) and G (IgG) and to answer a questionnaire on medical health conditions, comorbidities, and previous COVID-19 symptoms. Information on their housing conditions since the COVID-19 crisis was also collected from the participants.

resultsFrom June 01 to August 05, 2020, 1,156 homeless participants were enrolled in the study and tested. The overall seroprevalence of SARS-CoV-2 IgG/IgM antibodies was 5.6% (95%CI 2.3-7.0), ranging from 2.2% in people living on the streets to 8.1% in people living in emergency shelters (P = 0.009). Around one third of the seropositive participants reported COVID-19 symptoms. Compared to the general population in Marseille (3.6%), the homeless population living in the same urban area experienced a significantly increased risk of SARS-CoV-2 infection (|z| = 3.65 > 1.96).

conclusionThese findings highlight the need for regular screening among the homeless to prevent clustering in overcrowded or inadequate accommodations. It is also necessary to provide essential resources to keep homeless people healthy, the vast majority of whom have cumulative risk factors for SARS-CoV-2 infection.

Indexed as

AdultAgedAntibodies, ViralCOVID-19Cross-Sectional StudiesEpidemicsFemaleFranceGeographyHousingHumansIll-Housed PersonsImmunoglobulin GImmunoglobulin MMaleMiddle AgedAntibodies, ViralImmunoglobulin GImmunoglobulin M

Identifiers

PMID34525096
PMCPMC8443066
OpenAlexW3198944185

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.