RT Journal Article SR Electronic(1) A1 Lévy-Bruhl, D A1 Pebody, R G A1 Osborne, K A1 Veldhuijzen, I A1 Valenciano, M YR T1 JF VO OP UL https://www.eurosurveillance.org/content/10.2807/esm.03.11.00086-es