Assessment and quantification of Post-weaning Multi-systemic Wasting Syndrome (PMWS) severity at farm level.

Post-weaning Multi-systemic Wasting Syndrome (PMWS) causes major economic losses in the English pig industry (1). Severity of clinical signs and economic impact vary considerably between affected farms. Appropriate diagnosis and determination of PMWS severity on the farm are crucial for informing decision about control measures. The present study aimed to define and quantify severity levels of PMWS observed on farms using a novel approach based on morbidity, mortality and presence of porcine ci