Giardia cysts in sewage influent in Bergen, Norway 15-23 months after an extensive waterborne outbreak of giardiasis.

Abstract excerpt

AIMS: In autumn/winter 2004, a large outbreak of waterborne giardiasis occurred in Bergen, Norway. Over 1 year later, the concentrations and genotypes of Giardia cysts occurring in sewage influent were studied to investigate the impact of the outbreak event on Giardia infections in the community. METHODS AND RESULTS: Sewage influent samples from four sewage treatment works (STW) serving Bergen were analysed for...

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