RT Journal Article SR Electronic(1) A1 Lévy-Bruhl, D A1 Pebody, R G A1 Veldhuijzen, I A1 Valenciano, M A1 Osborne, K YR T1 JF VO OP UL https://www.eurosurveillance.org/content/10.2807/esm.03.10.00087-es