Different viral fitness between H1N1 and H3N8 avian influenzas viruses isolated from mallards - Ferreira, Helena Lage; Vangeluwe, Didier; Van Borm, Steven; Poncin, Olivier; Dumont, Nathalie; Ozhelvaci, Orkun; Berg, Thierry van den; Lambrecht, Bénédicte (International Symposium on Avian Influenza, 2015)