ArticleBMC infectious diseases2021
Incidence and risk factors of COVID-19-like symptoms in the French general population during the lockdown period: a multi-cohort study.
Article in BMC infectious diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.
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Who cites it
28 citing papers in PubMed, 48 citations in OpenAlex.
- Household exposure, demographic and health characteristics associated with SARS-CoV-2 infection in a cohort study in Northern France.Scientific reports · 2025Article
- The association between cannabis use and adherence to COVID-19 public health guidelines: prospective analyses from the French CONSTANCES cohort and SAPRIS survey.Harm reduction journal · 2025Article
- Revisiting the link between COVID-19 incidence and infection fatality rate during the first pandemic wave.Scientific reports · 2025Article
- Changes in household use of disinfectant and cleaning products during the first lockdown period in France.BMC public health · 2024Article
- Estimating SARS-CoV-2 infection probabilities with serological data and a Bayesian mixture model.Scientific reports · 2024Article
- Association of SARS-CoV-2 infection with physical activity domains and types.Scientific reports · 2023Article
- Associations between screen use, outdoor time/daylight exposure and sleep changes during the first COVID-19 lockdown in French children from the ELFE and EPIPAGE2 birth cohorts.CNS neuroscience & therapeutics · 2023Article
- Longitudinal impact of psychosocial status on children's mental health in the context of COVID-19 pandemic restrictions.European child & adolescent psychiatry · 2023Article
- Antibody response, associated symptoms and profile of patients presumably infected by SARS-CoV-2 with taste or smell disorders in the SAPRIS multicohort study.BMC infectious diseases · 2023Article
- Parents' depression and anxiety associated with hyperactivity-inattention and emotional symptoms in children during school closure due to COVID-19 in France.Scientific reports · 2023Article
- Cumulative incidence of SARS-CoV-2 infection within the homeless population: insights from a city-wide longitudinal study.BMJ open · 2023Article
- SARS-CoV-2 seroprevalence in French 9-year-old children and their parents after the first lockdown in 2020.Frontiers in pediatrics · 2023Article
- Association between use of psychotropic medications prior to SARS-COV-2 infection and trajectories of COVID-19 recovery: Findings from the prospective Predi-COVID cohort study.Frontiers in public health · 2023Article
- Correlates of Changes in Physical Activity and Sedentary Behaviors during the COVID-19 Lockdown in France: The NutriNet-Santé Cohort Study.International journal of environmental research and public health · 2022Article
- Severe Acute Respiratory Syndrome Coronavirus 2 Seroprevalence Among HIV-Negative Participants Using Tenofovir/Emtricitabine-Based Preexposure Prophylaxis in 2020: A Substudy of the French National Agency for Research on AIDS and Viral Hepatitis PREVENIR and Inserm SAPRIS-Sero Cohorts.Open forum infectious diseases · 2022Article
- A very low prevalence of SARS-CoV-2 infection but a high prevalence of other respiratory virus infections in children admitted to paediatric emergency departments.Acta paediatrica (Oslo, Norway : 1992) · 2022Article
- Risk factors of long term symptoms and outcomes among patients discharged after covid-19: prospective, multicentre observational study.BMJ medicine · 2022Article
- Use of health care services among people with Covid-19 symptoms in the first pandemic peak in France.PloS one · 2022Article
- Coronavirus Disease 2019 (COVID-19) Lockdown: Morbidity, Perception, Behaviors, and Attitudes in French Families From the PARIS Birth Cohort.Frontiers in public health · 2022Article
- COVID-19 Infections in Cancer Patients Were Frequently Asymptomatic: Description From a French Prospective Multicenter Cohort (PAPESCO-19).Clinical Medicine Insights. Oncology · 2022Article
Corrections and comments
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Authors and funding
15 authors at 4 institutions in 2 countries.
Funding
Abstract
backgroundOur main objectives were to estimate the incidence of illnesses presumably caused by SARS-CoV-2 infection during the lockdown period and to identify the associated risk factors.
methodsParticipants from 3 adult cohorts in the general population in France were invited to participate in a survey on COVID-19. The main outcome was COVID-19-Like Symptoms (CLS), defined as a sudden onset of cough, fever, dyspnea, ageusia and/or anosmia, that lasted more than 3 days and occurred during the 17 days before the survey. We used delayed-entry Cox models to identify associated factors.
resultsBetween April 2, 2020 and May 12, 2020, 279,478 participants were invited, 116,903 validated the questionnaire and 106,848 were included in the analysis. Three thousand thirty-five cases of CLS were reported during 62,099 person-months of follow-up. The cumulative incidences of CLS were 6.2% (95% Confidence Interval (95%CI): 5.7%; 6.6%) on day 15 and 8.8% (95%CI 8.3%; 9.2%) on day 45 of lockdown. The risk of CLS was lower in older age groups and higher in French regions with a high prevalence of SARS-CoV-2 infection, in participants living in cities > 100,000 inhabitants (vs rural areas), when at least one child or adolescent was living in the same household, in overweight or obese people, and in people with chronic respiratory diseases, anxiety or depression or chronic diseases other than diabetes, cancer, hypertension or cardiovascular diseases.
conclusionThe incidence of CLS in the general population remained high during the first 2 weeks of lockdown, and decreased significantly thereafter. Modifiable and non-modifiable risk factors were identified.
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