Genetic Homology to Known Strains

I need to code a series of observations made on the genetic sequence of the PRRS virus ORF5 gene. Specifically, the lab reports the percent homology to four different well-know vaccine and wild strains. I can figure out most of the parts but am stumped on how to indicate the strain being compared to. Seems like it must be part of the component. I can’t figure out how to search for a similar example.