Characterization and Prevalence of a New Porcine Calicivirus in Swine, United States
Figure 1. Neighbor-joining phylogenetic tree of caliciviruses based on the complete genomes (nucleotide). The newly identified St-Valerien–like virus NC-WGP93C strain is in boldface. The GenBank accession number of each strain is within parentheses. Bootstrap values are shown near branches. Human Poliovirus Sabin 1 was an outgroup control. Scale bar indicates nucleotide substitutions per site.