Yearly incidence rate of PRRS per MSHMP Participating Production System

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, the MSHMP team is sharing the yearly PRRS incidence rates in the 39 participating systems.


  • The average incidence rate for all systems during the entire period described was 0.27 PRRS outbreaks per farm per year.
  • The incidence rate of PRRS outbreaks within a system varies across years with some participants continuing to have lower incidences.

The content of this Science Page was meant for the participants of the MSHMP only, and was removed for privacy reasons. We apologize for the inconvenience. Thank you for your understanding.

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