“…Individual infection of PBoV usually causes no apparent clinical signs, and the co-infection of PBoV could make the clinical signs more obvious (Kesebir et al, 2006). Many scientists have also reported that PBoV exhibit varying prevalence rates with a wide range from 1.5% to 88% in pig samples from different regions (Blomstrom et al, 2009(Blomstrom et al, , 2010Zhai et al, 2010;Cadar et al, 2011;Li et al, 2011;McKillen et al, 2011;Shan et al, 2011a;Zeng et al, 2011;Zhang et al, 2011). In the present manuscript, compared with other organs in Chinese samples, the spleen (20.8%) and inguinal lymph node (27.2%) have much higher positive rates, suggesting that they are organs in which PBoV replication likely easily takes place.…”