| farm level risk factors associated with severity of post-weaning multi-systemic wasting syndrome. | a cross-sectional study involving 147 pig farms across england was conducted in 2008-2009. farm severity of post-weaning multi-systemic wasting syndrome (pmws) was estimated through the use of an algorithm that combined data on post-weaning mortality, pmws morbidity and proportion of porcine circovirus type 2 pcr positive pigs. farms were classified as non/slightly, moderately or highly affected by pmws. data on potential pmws risk factors were collected through interviews, on-farm assessment an ... | 2011 | 21741715 |