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An Italian Study on Cryptosporidium and Giardia in Wastewater, Fresh Water and Treated Water

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Abstract

Cryptosporidium oocysts and Giardia cysts has been isolated from waters worldwide. In Italy, studies on these parasites in the environment are still limited due to absence of epidemiological evidence and difficulty of adequate methodologies of sampling and analysis. The new Drinking Water Directive 98/83/CE states that Cryptosporidium has to be determined in water intended for human consumption if Clostridium perfringens is detected. This investigation contributes to the knowledge of both Cryptosporidium and Giardia occurrences in Italian aquatic environments through a two-year monitoring program. In addition, indicator bacteria and Clostridium perfringens were monitored in sewage, surface waters, drinking water, and swimming pools and possible correlations were calculated among all the selected parameters. Cysts and oocysts were detected in sewage and surface water and Giardia numbers always prevailed over Cryptosporidium. The parasites were not detected in drinking water, while a positive sample was obtained from the analysis of swimming pools. Pearson’s correlation coefficients evidenced a reciprocal correlation between both the protozoa and the Enterococci counts.

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  1. Dipartimento Ambiente e Connessa Prevenzione Primaria, Istituto Superiore di Sanità, Viale Regina Elena, Roma, Italy

    Rossella Briancesco & Lucia Bonadonna

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  1. Rossella Briancesco
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  2. Lucia Bonadonna
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Correspondence to Lucia Bonadonna.

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Briancesco, R., Bonadonna, L. An Italian Study on Cryptosporidium and Giardia in Wastewater, Fresh Water and Treated Water. Environ Monit Assess 104, 445–457 (2005). https://doi.org/10.1007/s10661-005-2282-4

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  • DOI: https://doi.org/10.1007/s10661-005-2282-4

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