Figure 1.

Phylogenetic tree constructed on the basis of the completed open reading frame 5 (ORF5) sequences of PRRS virus (PRRSV). The dendrogram was constructed using the maximum likelihood method based on the Kimura 2‐parameter model in MEGA software, version 6.0. The number of branches was calculated using bootstrapped values from 1,000 replicates. Triangles represent MN184‐like/NADC30‐like strains of PRRSV. Gray underlay represents local PRRSV strains. The European prototype strain Lelystad virus was used as the outgroup