Abstract
Various and divergent approaches that have been used to concentrate and assay viruses from tap water and environmental freshwaters are summarized and briefly explained. The basic principles behind the different methodologies and descriptions of the most recent developments are emphasized. Comparisons help demonstrate the relative sensitivities of different concentration and assay techniques.
Keywords: Health Effects, Viruses, Drinking Water
Biography
About the authors: Christon J. Hurst is a microbiologist with the US Environmental Protection Agency (USEPA), 26 W. Martin Luther King Dr., Cincinnati, OH 45268. He has 15 years of research experience in environmental microbiology, with primary involvement in the development and evaluation of methods for detecting viruses present in water, wastewater sludges, and soils, and the application of modeling techniques in studying the environmental fate of viruses. Hurst is a graduate of the University of Cincinnati (Ohio) with a BS and of the Baylor College of Medicine (Houston, Texas) with a PhD. William H. Benton is a biological laboratory technician and Ronald E. Stetler is a microbiologist, both with the USEPA in Cincinnati.

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