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Parasitology Research

, Volume 110, Issue 5, pp 1701–1709 | Cite as

Occurrences and genotypes of Cryptosporidium oocysts in river network of southern-eastern China

  • Shumin Xiao
  • Wei An
  • Zhimin Chen
  • Dongqing Zhang
  • Jianwei Yu
  • Min YangEmail author
Original Paper

Abstract

Transportation of Cryptosporidium oocysts in river type source water is of great concern in an area where extensive human activities exist. In this study, a total of 47 samples were collected from Tongxiang, China, where drinking source water was taken from a complicated river network system, by three sampling campaigns over a rainy season in 2009, to reveal the presence, genotypes, and likely source of Cryptosporidium oocysts in river water. Immunofluorescence microscopy analyses show that 37 (78.7%) were Cryptosporidium positive, with a mean concentration of 0.51 oocysts per liter. These results suggest that the protozoa were commonly distributed in the river network type source water of Tongxiang with a relatively low concentration level. PCR analysis was used to determine the species/genotypes of Cryptosporidium, which revealed the presence of the animal related species/genotypes including Cryptosporidium suis, Cryptosporidium fragile, and the avian III, pig II, cervine genotypes. Three of them were also detected in wastewater samples taken from neighboring animal farms, showing that farm animals rather than human might be the major pollution sources. This is the first report on simultaneous detection and genotyping of Cryptosporidium oocysts from surface water in China.

Keywords

River Water Sample Cryptosporidiosis Cryptosporidium Oocyst Sheep Farm Filter Holder 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

This work was supported by grants from National Natural Science Foundation of China (grant no. 50778171, 20807013).

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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Shumin Xiao
    • 1
    • 2
  • Wei An
    • 1
  • Zhimin Chen
    • 1
  • Dongqing Zhang
    • 1
  • Jianwei Yu
    • 1
  • Min Yang
    • 1
    Email author
  1. 1.State Key Laboratory of Environmental Aquatic Chemistry, Research Centre for Eco-Environmental SciencesChinese Academy of SciencesBeijingChina
  2. 2.College of Emergency ManagementHenan Polytechnic UniversityJiaozuoChina

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