In view of the unprecedented health crisis we are now living through, the national institute of health and medical research (Inserm) is writing to all individuals who have participated in epidemiologic studies in France, regardless of their age and their sex, to complete a questionnaire about the Coronavirus (COVID-19) epidemic.

The data collected will be analyzed rapidly, at regular intervals, during the lockdown period to provide the public authorities quickly with regular information about:

  • symptoms,
  • management, and
  • adherence to lockdown measures.



The objectives of this study in the general population are to:

  • assess the incidence of symptoms of COVID-19,
  • understand how the population is experiencing and adhering to these various public health measures, and
  • learn how families are living and organizing during the lockdown.


Why are we asking the Epipage 2 families to participate?

We are NOT asking you to participate in this survey because we think that you or your children are at higher risk of being contaminated or developing serious cases. The scientific information currently available shows that the vast majority of children infected with COVID-19 do not have serious cases, which are extremely rare in this age group.

But we know that you, the parents of children in the Epipage cohort, are especially sensitive to the advancement of knowledge in different domains of health and hope that you might therefore be interested in this survey and in contributing to research in this area in France.


Survey procedures

  1. You have received an email that describes the project.
    • This email includes a link.
    • Clicking this link activates an account that allows you access to this survey's questionnaires.
    • Not activating this account means that you do not want participate in the survey.
  2. Clicking shows the first questionnaire. It covers diverse subjects:
    • Your household composition, your residence,
    • Potential symptoms presented by your child and information about if and how he or she was contaminated,
    • Your health,
    • The impact of lockdown on your family environment.
    • L’impact du confinement sur votre environnement familial.
  3. Every 15 days until the end of the epidemic, an email or text (as you prefer) will be sent to you to ask you to complete other short questionnaires about:
    • Any symptoms your child might have had since the last contact,
    • o Any symptoms you might have had.
  4. If you cannot complete one of these questionnaires, it is not a problem; you will still be able to receive the next one.

  5. At the conclusion of the lockdown, you will receive a final questionnaire, asking you for a summary of your feelings during this period.


Serology tests

To study the virus circulation trends in the population, we are asking the families who have completed the questionnaires to undergo a serology test. This test measures "seroconversion", that is, the presence in your blood of antibodies that are markers of the presence, past or present, of the virus in the organism, even if you have not had any symptoms.

Your child and one of the parents can take this test.

If you and your child agree, a sampling kit will be sent to your home. You can take a fingertip sample of your own blood. This sampling, simple and painless, is performed with a safety lancet. It allows five droplets to be placed on a piece of blotting paper. A detailed explanatory leaflet with pictures will be furnished together with the kit.

Throughout the study, these biological samples will be stored at the Fondation Jean Dausset, which has been certified to meet ISO20387 standards, thus guaranteeing high scientific and technical quality, safety, and confidentiality (

Testing for antibodies against the virus that causes COVID-19 will take place at the Marseille Medical School laboratory and be coordinated by Professor Xavier de Lamballerie.

The more of you who participate, the more reliable the data about the infection rate in the population will be. The more reliable the data, the more appropriate the protective measures adopted can be.

We're counting on you!


The National Data Protection Authority (decision DR-2020-161 in response to request for authorization 920139) and the Patient Protection Committee for the south Mediterranean III region (authorization 2020.04.24 bis_ approved this study.

You still haven't sent us your email address? Send it to us by email to the usual address ( This email address is being protected from spambots. You need JavaScript enabled to view it. )and identify yourself.

Thank you all for your participation … and take care of yourselves!


Your questions about the infection

We also suggest you consult the French Society of Neonatology website, which offers advice for you to help you manage your child's confinement as well as possible ( ).

You will also find the most recent scientific information available at the French Society of Pediatrics website ( ).

Bâtiment Recherche - Hôpital Tenon
4, rue de la Chine 75970 Paris Cedex 20