Type 2 PRRS virus ORF5 divergence from VR2332 over time

This is our Friday rubric: every week a new Science Page from the Bob Morrison’s Swine Health Monitoring Project. The previous editions of the science page are available on our website.

This week, Dr. Mariana Kikuti and the MSHMP team share the evolution of PRRS ORF 5 from the original strain discovered in the 90s.

Key Points

  • ORF5 sequencing for PRRSv monitoring have been increasing over time
  • ORF5 nucleotide divergence from the reference VR2332 averaged at around 10-15% throughout 2000-2018.
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