Detection and molecular characterization of cryptosporidium species in recreational waters of Chaharmahal va Bakhtiyari province of Iran using nested-PCR-RFLP

The aim of this study was to detect and characterize Cryptosporidium spp. in water samples collected from recreational ponds of Chaharmahal va Bakhtiyari Province of Iran. Thirty water samples were collected from November 2009 to May 2010. Each sample contained 10 liters of water. We used the SSU rRNA-based PCR-RFLP technique. Out of thirty samples examined, 6 [20%] were positive for different Cryptosporidium spp. Restriction pattern analysis showed that C. parvum has been the most prevalent genotype, followed by C. hominis and C. canis, respectively. In this area, the higher prevalence of C. parvum compared with other genotypes is consistent with the distribution of cattle. Farm animals, particularly cattle are the main source of cryptosporidial contamination for recreational waters in this area