RT Journal Article SR Electronic(1) A1 Manuguerra, J C YR 2001 T1 Influenza activity back to pre-winter levels in most of Europe JF Weekly releases (1997–2007) VO 5 IS 15 SP 1769 OP DO https://doi.org/10.2807/esw.05.15.01769-en UL https://www.eurosurveillance.org/content/10.2807/esw.05.15.01769-en