Emerging PRRS Virus Strains L1C 1-2-4 and Rosalia: Want to Learn More?

Emerging diseases often come with familiar names coupled with increased risk and need for response. For example, in the U.S., the porcine reproductive and respiratory syndrome virus (PRRSV) L1C variant of RFLP 1-4-4 has been a significant challenge in the Upper Midwest for two years and now PRRSV L1C 1-2-4 has become a concern, the Swine Health Information Center (SHIC) reports. In Spain, a PRRSV strain with increased virulence known as Rosalia has affected production since 2020. Because of this, SHIC will be hosting a webinar to discuss these emerging PRRSV strains on Tuesday, Feb. 21 at 11 a.m. CT along with the American Association of Swine Veterinarians and Iowa State University’s Swine Medicine Education Center.