Received: 6 April 2019
Accepted: 29 June 2019
First Online: 9 July 2019
Ethics approval and consent to participate
: The CoPanFlu-RUN protocol was funded by the French National Institute of Health and Medical Research (INSERM). It was conducted in accordance with the Declaration of Helsinki and the French law for biomedical research (Nu ID RCBAFSSAPS: 2009-A00689-48). It was approved by the Ethic Committee of Bordeaux 2 University and allowed the re-use of serum samples for the investigation of other infectious diseases.
: Written informed consent was obtained from all the participants or from the legal representative of all underage participants at the time of CoPanFlu-RUN cohort enrolment. This specified the re-utilisation of the data including for the publication of this report.
: The authors declare that they have no competing interests.