TY - JOUR T1 - Outbreak of invasive meningococcal disease caused by a meningococcus serogroup B in a nursery school, Wallonia, Belgium, 2018 JF - Eurosurveillance Y1 - 2022 A1 - Stéphanie Jacquinet A1 - Wesley Mattheus A1 - Sophie Quoilin A1 - Chloé Wyndham-Thomas A1 - Charlotte Martin A1 - Dimitri Van der Linden A1 - André Mulder A1 - Julie Frère A1 - Schirvel, Carole VL - 27 CP - 9 M3 - 10.2807/1560-7917.ES.2022.27.9.2100224 ER -