1-4-4 – Page 2 – Swine in Minnesota

Environmental contamination assessment in farms undergoing an outbreak with PRRS 1-4-4 Lineage 1C

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.

The Morrison Swine Health Monitoring Project take a look at whether PRRSv cases associated with the linage 1C, RFLP 1-4-4 variant can be detected in the outside areas of farms undergoing an outbreak.

Key Points

There is little understanding of contributing factors aiding the 1-4-4 L1C PRRSv rapid transmission and biosecurity breaches
Environmental detection in recently infected farms was possible although detection was low
Most positive samples originated from exhausting fans, showing the virus may exit a positive barn via that route

Updated epidemiological curve of cases associated with the new Lineage 1C RFLP1-4-4 variant

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 Friday the Morrison Swine Health Monitoring Project shares an update on their continued monitoring of PRRSv cases associated with the linage 1C, RFLP 1-4-4 variant.

How many cases are we seeing of the new PRRS variant?

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.

As the MSHMP team continues to monitor the detection of the newly described PRRSv Lineage 1C RFLP 1-4-4 variant, they provide an update of the epidemiological curve of cases associated with this variant.

Newly emerging PRRSV Lineage 1C variant nomenclature

An issue with the platform prevented this article from being posted on Friday, we apologize for the inconvenience!

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 in collaboration with the VanderWaal lab focuses on the nomenclature of a recently emerged PRRSv variant that has been causing severe clinical signs with associated mortality in swine herds around the USA.