Skip to main content
Fig. 1 | BMC Veterinary Research

Fig. 1

From: Molecular evolution of type 2 porcine reproductive and respiratory syndrome viruses circulating in Vietnam from 2007 to 2015

Fig. 1

Phylogenetic tree based on nucleotide sequence of the ORF5 gene of 144 PRRSV strains isolated in Vietnam during 2007–2015. The phylogenetic tree, generated via the MCMC method using BEAST v1.8.2 software, identified three different groups. The inserted histogram illustrates pairwise sequence comparisons of Vietnamese PRRSV type 2 strains. Three distinct nucleotide identity distribution peaks are shown. The time-scale (in years) represented in the tree is indicated by the scale bar

Back to article page

BMC Veterinary Research

ISSN: 1746-6148

Contact us