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.
- 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.