RT Journal Article SR Electronic(1) A1 Whiting, P YR 1999 T1 Influenza in Europe - taking off? JF Weekly releases (1997–2007) VO 3 IS 2 SP 1462 OP DO https://doi.org/10.2807/esw.03.02.01462-en UL https://www.eurosurveillance.org/content/10.2807/esw.03.02.01462-en