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Main Title Status of Waterborne Giardiasis Outbreaks and Monitoring Methods.
Author Craun, G. F. ; Jakubowski, W. ;
CORP Author Health Effects Research Lab., Cincinnati, OH. Toxicology and Microbiology Div.
Publisher cNov 86
Year Published 1986
Report Number EPA/600/J-86/516;
Stock Number PB90-113499
Additional Subjects Aquatic microbiology ; Water quality ; Giardia ; Giardiasis ; Monitoring ; Coliform bacteria ; Seasonal variations ;
Library Call Number Additional Info Location Last
NTIS  PB90-113499 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 10p
Abstract Ninety waterborne outbreaks and 23,776 cases of giardiasis were reported in the United States during the period 1965-1984. These outbreaks occurred primarily in the northwestern, Rocky Mountain, and northeastern states, and most outbreaks occurred as the result of consuming contaminated surface water. In many water systems experiencing an outbreak, the current coliform standard was not exceeded, and the applicability of the coliform standard in preventing outbreaks of giardiasis must be reevaluated. Simple disinfection as the only treatment for surface water sources has been ineffective in preventing the waterborne transmission of giardiasis, and all surface water should receive effective filtration in addition to disinfection. Currently available methods for analysis of Giardia cysts in water samples depend upon microscopic examination of sample concentrates. All methods have four basic steps in common: concentration, purification, detection, and identification. Variations in procedures for accomplishing each of these steps have been reported but comparative evaluations under controlled conditions with a variety of waters have not been performed. Existing methods are not suitable for routine monitoring of water supplies in order to satisfy a standard.
Supplementary Notes Pub. in Proceedings of International Symposium on Water-Related Health Issues/American Water Resources Association, Bethesda, MD., p167-174 Nov 86.
NTIS Title Notes Journal article.
Category Codes 57U; 57K; 57E; 68D
NTIS Prices PC A02/MF A01
Primary Description 600/10
Document Type NT
Cataloging Source NTIS/MT
Control Number 935220582
Origin NTIS
Type CAT