Zoonotic transmission of Cryptosporidium parvum: Implications for water- borne cryptosporidiosis

T. K. Graczyk, R. Fayer, M. R. Cranfield

Research output: Contribution to journalArticlepeer-review

88 Scopus citations


The emergence of Cryptosporidium parvum-associated cryptosporidiosis as a worldwide zoonosis has stimulated interest in the modes of pathogen transmission. Here, Thaddeus Graczyk, Ronald Fayer and Michael Cranfield discuss the complex epidemiology of C. parvum, emphasizing the crosstransmission potential of the pathogen, mechanical vectors involved in water-borne transmission of the oocysts, and factors contributing to contamination of pristine waters with Cryptosporidium. They also outline the public health importance of proper interpretation of positive detection of Cryptosporidium oocysts at water-treatment facilities and identify means by which watersheds can be protected from Cryptosporidium contamination.

Original languageEnglish (US)
Pages (from-to)348-351
Number of pages4
JournalParasitology Today
Issue number9
StatePublished - Sep 1997
Externally publishedYes

ASJC Scopus subject areas

  • Parasitology


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