
Evaluating the feasibility and participants' representativeness of an online nationwide surveillance system for influenza in France
M Debin, C Turbelin, T Blanchon, I Bonmarin, A Falchi, T Hanslik, D Levy-Bruhl, C Poletto, V Colizza
PLOS One 8(9):e73675 (2013)
The paper presents the results of our first analysis on the data collected through grippenet.fr: it evaluates the feasibility of the implementation of the project during its launch season (2011/2012 influenza season) with respect to other partnering projects in Europe (Influenzanet), and assesses the representativeness of the grippenet.fr population.

- grippenet.fr population covers all regions of France, with a relatively good representation in the majority of its regions (see on the right, grey regions)
- women participate more than men
- the age class [60-69] is overrepresented, whereas young adults ([18-29] class) are underrepresented
- grippenet.fr population is more frequently employed, with a higher education
- prevalence of asthma and diabetes is in good agreement with the general population, whereas grippenet.fr participants are more vaccinated
- mobility of grippenet.fr participants nicely captures the most important features of french commuting (see below)