| prevalence of cryptosporidium spp. in pigs in shanghai, china. | a survey on prevalence of cryptosporidium spp. in pigs at 12 farms in 8 suburban districts and 1 county of shanghai was conducted under sheather's sucrose flotation protocol and modified acid-fast stain methods from 2006 to 2009. a total of 2323 faecal samples were collected and cryptosporidium spp. oocysts were detected in 800 samples (34.4%). cryptosporidium was found in all 12 pig farms. significant variations of prevalence were observed in different farms ranging from 14.1% to 90.6%. a follo ... | 2011 | 21616599 |