Phylogenetic analysis of highly pathogenic avian influenza A(H5N8) virus outbreak strains provides evidence for four separate introductions and one between-poultry farm transmission in the Netherlands, November 2014 Bouwstra, R J and Koch, G and Heutink, R and Harders, F and van der Spek, A and Elbers, A R and Bossers, A, Eurosurveillance, 20, 21174 (2015), https://doi.org/10.2807/1560-7917.ES2015.20.26.21174