RT Journal Article SR Electronic(1) A1 Eurosurveillance editorial team YR 2003 T1 Influenza activity on the increase in a number of countries in Europe, in particular Belgium, France and Norway JF Weekly releases (1997–2007) VO 7 IS 50 SP 2342 OP DO https://doi.org/10.2807/esw.07.50.02342-en UL https://www.eurosurveillance.org/content/10.2807/esw.07.50.02342-en