Detection of PRRSV-2 in air emissions from grow-finish barns

A recently published study conducted by Mark Schwartz and collaborators evaluated the feasibility of using air sampled from right outside the exhaust fans on finishing barns to detect PRRSV. The full article is available in open access on the journal’s website.

Continue reading “Detection of PRRSV-2 in air emissions from grow-finish barns”

Assessment of the Relationship Between Bioexclusion Practices Applied in Wean-to-Harvest Sites and PRRS Outbreaks

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’s Science Page comes to us from researchers Mariah Musskopf, Tina Peterson, Isadora Machado, Thinh Tran Pham Tien, Elly Kirwa, Daniel Moraes, Guilherme Cezar, Mafalda Mil-Homens, Peng Li, Elisa De Conti, Ana Paula Poeta Silva, Derald J. Holtkamp, Daniel C.L. Linhares, and Gustavo S. Silva at Iowa State University.

Continue reading “Assessment of the Relationship Between Bioexclusion Practices Applied in Wean-to-Harvest Sites and PRRS Outbreaks”

How CVM researchers are tackling a devastating swine virus

Dr. Corzo presenting on a stage to a crowd
Cesar Corzo, director of the Morrison Swine Health Monitoring Program, presents PRRSV research at a conference. 

For decades, veterinarians and producers have struggled to contain porcine reproductive and respiratory syndrome virus (PRRSV).

The highly pathogenic swine virus mutates rapidly, making control a moving target. Pigs infected with PRRSV suffer from high morbidity and mortality rates. Even those who live endure difficulty breathing, fever, and loss of appetite. Today, the disease affects as many as half of all swine breeding farms in the United States. It’s the most costly issue the swine industry faces.

Continue reading “How CVM researchers are tackling a devastating swine virus”

Recombinants Are the Key Drivers of Recent PRRSV-2 Evolution

The Schroeder’s lab at the University of Minnesota College of Veterinary Medicine recently published a brief report in the journal Pathogens regarding a likely cause of Porcine Reproductive and Respiratory Virus type 2 evolution.

Continue reading “Recombinants Are the Key Drivers of Recent PRRSV-2 Evolution”

PRRSV variants under monitoring

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”