Prime-boost vaccination with a fowlpox vector and an inactivated avian influenza vaccine is highly immunogenic in Pekin ducks challenged with Asian H5N1 HPAI., Steensels, Mieke, Bublot M, Van Borm Steven, De Vriese J, Lambrecht Bénédicte, Richard-Mazet A, Chanavat-Bizzini S, Duboeuf M, Le Gros F-X, and van den Berg Thierry , Vaccine, 2009 Jan 29, Volume 27, Issue 5, p.646-54, (2009)