Dataset Information

Source of SARS-CoV-2 infection: results from a series of 584,846 cases in France from October 2020 to August 2022.

ABSTRACT:

Background

We aimed to study the source of infection for recently SARS-CoV-2-infected individuals from October 2020 to August 2022 in France.

Methods

Participants from the nationwide ComCor case-control study who reported recent SARS-CoV-2 infection were asked to document the source and circumstances of their infection through an online questionnaire. Multivariable logistic regression was used to identify the factors associated with not identifying any source of infection.

Results

Among 584,846 adults with a recent SARS-CoV-2 infection in France, 46.9% identified the source of infection and an additional 22.6% suspected an event during which they might have become infected. Known and suspected sources of infection were household members (30.8%), extended family (15.6%), work colleagues (15.0%), friends (11.0%), and possibly multiple/other sources (27.6%). When the source of infection was known, was not a household member, and involved a unique contact (n = 69,788), characteristics associated with transmission events were indoors settings (91.6%), prolonged (> 15 min) encounters (50.5%), symptomatic source case (64.9%), and neither the source of infection nor the participant wearing a mask (82.2%). Male gender, older age, lower education, living alone, using public transportation, attending places of public recreation (bars, restaurants, nightclubs), public gatherings, and cultural events, and practicing indoor sports were all independently associated with not knowing the source of infection.

Conclusion

Two-thirds of infections were attributed to interactions with close relatives, friends, or work colleagues. Extra-household indoor encounters without masks were commonly reported and represented avoidable circumstances of infection.

Trial registration

ClinicalTrials.gov registration number: NCT04607941.

SUBMITTER: Rakover A

PROVIDER: S-EPMC10826227 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Source of SARS-CoV-2 infection: results from a series of 584,846 cases in France from October 2020 to August 2022.

Rakover Arthur A Galmiche Simon S Charmet Tiffany T Chény Olivia O Omar Faïza F David Christophe C Martin Sophie S Mailles Alexandra A Fontanet Arnaud A

BMC public health 20240130 1

<h4>Background</h4>We aimed to study the source of infection for recently SARS-CoV-2-infected individuals from October 2020 to August 2022 in France.<h4>Methods</h4>Participants from the nationwide ComCor case-control study who reported recent SARS-CoV-2 infection were asked to document the source and circumstances of their infection through an online questionnaire. Multivariable logistic regression was used to identify the factors associated with not identifying any source of infection.<h4>Resu ...[more]

PMID: 38287286

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Dataset Information

Source of SARS-CoV-2 infection: results from a series of 584,846 cases in France from October 2020 to August 2022.

Background

Methods

Results

Conclusion

Trial registration

Publications

Source of SARS-CoV-2 infection: results from a series of 584,846 cases in France from October 2020 to August 2022.

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