Porcine reproductive and respiratory syndrome virus is a major threat to pig production worldwide. The virus is constantly changing, with new variants appearing every year. Some of these new variants can spread more easily or have a greater impact on your herd’s health and productivity. An example is the emergence of a new PRRSV variant named 1C.5 (previously referred to as L1C 1-4-4, or 1-4-4) in late 2020. In the past, monitoring systems have had a difficulty identifying new variants like this quickly enough to allow for a rapid response, and they often focused on describing epidemics that had already happened.
Continue reading “PRRSV variants under monitoring”Tag: L1C variant
Do all PRRSV variants have the same level of infectivity?
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.
University of Minnesota researchers Marcello Melini, Mariana Kikuti, Montse Torremorell, Kimberly VanderWaal, Stephanie Rossow, Jerry Torrison, and Cesar Corzo share the results of a study conducted to measure the infectivity of different PRRSV variants.
Continue reading “Do all PRRSV variants have the same level of infectivity?”Tracing the evolutionary history of the novel PRRSV-2 L1C-1-4-4 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 we are looking at the PPRSv L1C-1-4-4 variant and comparing its evolution to other PRRSv strains, thanks to research by Nakarin Pamornchainavakul, Mariana Kikuti, Igor A. D. Paploski, Dennis N. Makau, Albert Rovira, Cesar A. Corzo, and Kimberly VanderWaal.
Continue reading “Tracing the evolutionary history of the novel PRRSV-2 L1C-1-4-4 variant”What are PRRS lineages?
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.
Following up from last week’s article, Igor Paploski, Mariana Kikuti and Cesar Corzo dig into what PRRS linages are and give background on Lineage 1, and the sublineages that further classify the virus.
Continue reading “What are PRRS lineages?”Experimental pig study confirms the high virulence of the recently emerged PRRSV 1-4-4 L1C variant strain
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 we learn about the findings of a study conducted by researchers at Iowa State University inoculating pigs with the 1-4-4 L1C variant.
Continue reading “Experimental pig study confirms the high virulence of the recently emerged PRRSV 1-4-4 L1C variant strain”