Study Highlights Low Incidence, Seasonality, and Regional Trends of SVA in US Breeding Herds
Senecavirus A (SVA), an endemic pathogen, continues to pose a challenge for the US swine industry, causing vesicular lesions on snouts and feet. Although SVA mimics foot-and-mouth disease (FMD), making every suspected case critical to rule out FMD, the study shows its impact remains low.
From 2015 to 2024, data collected through the Morrison Swine Health Monitoring Project (MSHMP) found that only 2.5% of US breeding herds experienced SVA outbreaks annually. This study involved over 36,000 PCR submissions and identified SVA outbreaks across various states. Despite the low incidence, the virus’s spread and seasonal outbreaks—primarily between July and December—highlight the need for continuous monitoring.
Regional trends indicated that the Midwest had the highest number of SVA cases, linked to the region's dense pig populations. These findings stress the importance of targeted surveillance, especially during high-risk months. The study also pointed out the role of biosecurity practices, including animal movement and dead animal management, in reducing transmission.
In conclusion, while SVA’s presence is low, awareness remains crucial to avoid FMD misdiagnosis and ensure prompt interventions. The collaborative data from MSHMP offers swine producers and veterinarians valuable insights to strengthen preventive strategies.
Photo Credit: gettyimages-d-keine