RT Journal Article SR Electronic(1) A1 Almeda, J A1 Casabona BarbarĂ , J A1 Simon, B A1 GĂ©rard, M A1 Rey, D A1 Puro, V A1 Thomas, T YR T1 JF VO OP UL https://www.eurosurveillance.org/content/10.2807/esm.09.06.00471-it