RT Journal Article SR Electronic(1) A1 A Fomsgaard A1 K Bragstad A1 P Jørgensen YR 2003 T1 New avian influenza virus A H5N7 identified in ducks in Denmark JF Weekly releases (1997–2007) VO 7 IS 39 SP 2300 OP DO https://doi.org/10.2807/esw.07.39.02300-en UL https://www.eurosurveillance.org/content/10.2807/esw.07.39.02300-en