 The study identifies medical and socio-economic risk factors associated with hospitalization for invasive meningococcal disease, IMD, in a large sample of individuals with IMD in France, which may help identify groups who could benefit from targeted prevention measures such as vaccination to reduce the burden of IMD. This article was offered by Mulhain Keer Toha, Catherine Vial Olivier, Stéphane Bouie, and others.