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rRNA Hybridization Assay for Cryptosporidium

EPA Contract Number: 68D70022
Title: rRNA Hybridization Assay for Cryptosporidium
Investigators: Ray, Bryan L.
Small Business: SymBiotech Inc.
EPA Contact: Manager, SBIR Program
Phase: I
Project Period: September 1, 1997 through March 1, 1998
Project Amount: $70,000
RFA: Small Business Innovation Research (SBIR) - Phase I (1996)
Research Category: Ecological Indicators/Assessment/Restoration , SBIR - Monitoring and Analysis

Description:

Current methods of testing water supplies for Cryptosporidium parvum are inadequate. The lack of a reliable test led the EPA to postpone enactment of its Information Collection Rule for 2 years. The rule was recently enacted, despite any further development in testing methodologies. The EPA-approved test detects between 5% and 21% of the total Cryptosporidium known to be present in a sample.

This Phase I project will develop a simple nucleic acid hybridization assay for Cryptosporidium. The assay will use proprietary substrates, which can increase assay sensitivity, compared with conventional substrates, by 10-fold or greater. This study should result in a sensitive hybridization assay that can simultaneously assay multiple samples while meeting EPA's limit of detection of 1,000 oocysts per 100 liters of water. Similar technology also can be applied to detecting Giardia, E. coli, and C. perfringens.

Supplemental Keywords:

small business, SBIR, monitoring, engineering. , Ecosystem Protection/Environmental Exposure & Risk, Water, Scientific Discipline, RFA, Ecosystem/Assessment/Indicators, Drinking Water, Ecological Indicators, Environmental Engineering, Environmental Microbiology, Ecological Effects - Human Health, Ecological Effects - Environmental Exposure & Risk, Ecosystem Protection, Monitoring/Modeling, Environmental Monitoring, cryptosporidium, E. coli monitoring, r RNA hybridization assay, Giardia, monitoring, nucleic acid hybridization, Giardia Spp, water supply, sampling, hybridization, cryptosporidium , microbial risk management, yeast mutant, E. Coli

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The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.

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