Different measles outbreaks in Belgium, January to June 2016 - a challenge for public health., Grammens, Tine, Maes Virginie, Hutse Veronik, Laisnez Valeska, Schirvel Carole, Trémérie Jean Marie, and Sabbe Martine , Euro Surveill, 2016 Aug 11, Volume 21, Issue 32, (2016)