Alvarez-Norambuena Joaquin, Quinonez-Munoz Angie, Corzo Cesar A, Goyal Sagar M
Department of Veterinary Population Medicine, University of Minnesota, Saint Paul, MN 55108, USA.
Viruses. 2025 Jan 1;17(1):58. doi: 10.3390/v17010058.
Porcine reproductive and respiratory syndrome (PRRS) is an endemic disease affecting the swine industry. The disease is caused by the PRRS virus (PRRSV). Despite extensive biosecurity and control measures, the persistence and seasonality of the virus have raised questions about the virus's environmental dynamics during the fall season when the yearly epidemic onset begins and when crop harvesting and manure incorporation into the field occur. Therefore, this study aimed to assess the potential for PRRSV to percolate through different soil types, simulating conditions that could lead to groundwater contamination which could represent a risk of herd introduction. An experimental soil column model was used to mimic field conditions. Three PRRSV-2 strains were tested across thirteen Minnesota soils with different physical and chemical characteristics. The findings revealed that PRRSV can percolate through all soil types and that the amount of virus percolated decreases with increased amounts of soil. These results suggest that PRRSV can percolate through different soil types. Further investigations should be undertaken to determine the associated implications for swine health and biosecurity measures.
猪繁殖与呼吸综合征（PRRS）是一种影响养猪业的地方性疾病。该疾病由PRRS病毒（PRRSV）引起。尽管采取了广泛的生物安全和控制措施，但病毒的持续性和季节性引发了人们对秋季病毒环境动态的质疑，因为秋季是每年疫情开始的时候，也是农作物收割和粪便施入田间的时候。因此，本研究旨在评估PRRSV通过不同土壤类型渗透的可能性，模拟可能导致地下水污染的条件，而地下水污染可能代表猪群引入的风险。使用实验性土柱模型来模拟田间条件。对三种PRRSV - 2毒株在13种具有不同物理和化学特性的明尼苏达土壤中进行了测试。研究结果表明，PRRSV可以渗透过所有土壤类型，并且随着土壤量的增加，渗透的病毒量会减少。这些结果表明PRRSV可以通过不同的土壤类型渗透。应进一步开展调查，以确定对猪健康和生物安全措施的相关影响。
