Impact of bathers on levels of Cryptosporidium parvum oocysts and Giardia lamblia cysts in recreational beach waters

Deirdre Sunderland, Thaddeus K. Graczyk, Leena Tamang, Patrick N Breysse

Research output: Contribution to journalArticle


Recreational beach water samples collected on weekends and weekdays during 11 consecutive summer weeks were tested for potentially viable Cryptosporidium parvum oocysts and Giardia lamblia cysts using the multiplexed fluorescence in situ hybridization (FISH) method. The levels of oocysts and cysts on weekends were significantly higher than on the weekdays (P

Original languageEnglish (US)
Pages (from-to)3483-3489
Number of pages7
JournalWater Research
Issue number15
Publication statusPublished - Aug 2007



  • Cryptosporidium parvum
  • Giardia lamblia
  • Recreational water
  • Surface water
  • Water quality
  • Waterborne oocysts

ASJC Scopus subject areas

  • Earth-Surface Processes

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