Tag: naive

Time to a new PRRS outbreak in naïve breeding herds

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.

In today’s Science page, MSHMP researchers Mariana Kikuti, Catalina Picasso-Risso, Claudio Marcello Melini and Cesar Corzo share data regarding the time it takes for naïve breeding herds to break with PRRSV.

Continue reading “Time to a new PRRS outbreak in naïve breeding herds”

Average time sites stay in a naïve PRRSV status: Preliminary Results

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.

Key points

  • Up to February 2021, 209 breeding herd moved to a PRRS naïve status a total of 259 times.
  • On average, sites remained naïve approximately two years before changing to a different status.
  • Most naïve sites moved to an active PRRSV break status in an average one and a half years.
Continue reading “Average time sites stay in a naïve PRRSV status: Preliminary Results”