Evidence map›Paper›PMID 33589470›Full record

ArticleBritish journal of sports medicine2021

Resuming professional football (soccer) during the COVID-19 pandemic in a country with high infection rates: a prospective cohort study.

Yorck Olaf Schumacher, Montassar Tabben, Khalid Hassoun, Asmaa Al Marwani, Ibrahim Al Hussein, Peter Coyle, Ahmed Khellil Abbassi, Hani Taleb Ballan, Abdulaziz Al-Kuwari, Karim Chamari and 1 more

Abstract read
In one paragraph

Article in British journal of sports medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
54citing 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

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

  1. Pooled it
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  15. Common Sports Infectious Disease.HSS journal : the musculoskeletal journal of Hospital for Special Surgery · 2023
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  19. Impact and control of the COVID pandemic in an elite sports club: Real Madrid.Revista espanola de quimioterapia : publicacion oficial de la Sociedad Espanola de Quimioterapia · 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

11 authors.

Yorck Olaf SchumacherAspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar yo.schumacher@aspetar.com.ORCID http://orcid.org/0000-0003-0381-618X
Montassar TabbenAspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.ORCID http://orcid.org/0000-0002-2152-9427
Khalid HassounAspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.
Asmaa Al MarwaniAspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.
Ibrahim Al HusseinAspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.
Peter CoyleHamad Medical Corporation, Doha, Qatar.
Ahmed Khellil AbbassiQatar Stars League, Doha, Qatar.
Hani Taleb BallanQatar Stars League, Doha, Qatar.
Abdulaziz Al-KuwariAspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.
Karim Chamari *Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.ORCID http://orcid.org/0000-0001-9178-7678
Roald Bahr *Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar.ORCID http://orcid.org/0000-0001-5725-4237

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThe risk of viral transmission associated with contact sports such as football (soccer) during the COVID-19 pandemic is unknown. The aim of this study was to describe the infective and immune status of professional football players, team staff and league officials over a truncated football season resumed at the height of the COVID-19 pandemic in a country with high infection rates and to investigate the clinical symptoms related to COVID-19 infection in professional football players.

methodsProspective cohort study of 1337 football players, staff and officials during a truncated football season (9 weeks) with a tailored infection control programme based on preventive measures and regular SARS-CoV-2 PCR swab testing (every 3-5 days) combined with serology testing for immunity (every 4 weeks). Clinical symptoms in positive participants were recorded using a 26-item, Likert-Scale-based scoring system.

resultsDuring the study period, 85 subjects returned positive (cycle threshold (cT) ≤30) or reactive (30<cT<40) PCR tests, of which 36 were players. The infection rate was consistent with that of the general population during the same time period. More than half of infected subjects were asymptomatic, and the remaining had only mild symptoms with no one requiring hospitalisation. Symptom severity was associated with lower cT values. Social contacts and family were the most common sources of infection, and no infection could be traced to training or matches. Of the 36 infected players, 15 presented positive serology during the study period.

conclusionFootball played outdoors involving close contact between athletes represents a limited risk for SARS-CoV-2 infection and severe illness when preventive measures are in place.

Indexed as

Communicable Disease ControlCOVID-19 TestingFamily HealthSocial InteractionAdultCarrier StateCOVID-19HumansPandemicsProspective StudiesQatarSARS-CoV-2Soccerfootballillnessrespiratorysoccervirus

Identifiers

PMID33589470
PMCPMC7886664

What OpenQuestion holds

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LicenceCC BY-NC
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.