The Health Effects Research Laboratory and the Municipal Environmental Research Laboratory of the U.S. Environmental Protection Agency sponsored a National Symposium on Waterborne Transmission of Giardiasis in Cincinnati on September 18-20, 1978. The symposium brought together scientists, engineers, and federal, state, and local public health officials for the purpose of determining the state-of-knowledge regarding the etiologic agent and the disease as they relate to water supplies. Sessions on the organism, the disease, epidemiology, detection methodology, water treatment technology, and research needs were held. The proceedings consist of 19 invited manuscripts, 6 abstracts of contributed papers and transcripts of discussions following each presentation.

"EPA/600-9-79-001." "July 1979." Includes bibliographical references.

Giardia lamblia : classification, structure, identification / N.D. Levine -- Ultrastructural aspects of Giardia / H.G. Sheffield -- Surface morphology of Giardia cysts recovered from a variety of hosts / A.S. Tombes -- Managing the patient with giardiasis : clinical, diagnostic and therapeutic aspects / M.S. Wolfe -- The possible use of an indirect immunofluorescent test using axenically grown Giardia lamblia antigens in diagnosis giardiasis / G.S. Visvesvara, G.R. Healy -- The experimental transmission of Giardia lamblia among volunteer subjects / R.C. Rendtorff -- Giardiasis in the mouse : clues to host immune mechanisms / D.P. Stevens -- The presence and absence of Giardia lamblia in studies on parasite prevalence in the U.S.A. / G.R. Healy -- Animal reservoirs and cross-species transmission of Giardia / R.B. Davies, C.P. Hibler -- Waterborne outbreak of giardiasis / G.F. Craun -- Waterborne giardiasis / D. Juranek -- Water supply problems associated with a waterborne outbreak of giardiasis / E.C. Lippy -- An outbreak of gastroenteritis associated with Giardia lambia / L. Veazie, I. Brownlee, H.J. Sears -- Methods for detection of Giardia cysts in water supplies / W. Jakubowski, T.H. Ericksen -- The propagation of Giardia trophozoites in vitro / E.A. Meyer -- Introduction on Giardia excystation and the effect of temperature on cyst viability as compared by eosin-exclusion and in vitro excystation / A.K. Bingham [and others] -- Disinfection resistance of Giardia cysts : origins of current concepts and research in progress / J.C. Hoff -- Water filtration techniques for removal of Giardia cysts and cyst models / G.S. logsdon, J.M. Symons, R.L. Hoye, Jr. -- In vitro model for analyzing the attachment/release of trophozoites of Giardia : evidence for the involvement of contracite proteins and the effect of atabrine / L.S. Erlandsen [and others] -- Report of endosymboisis in Giardia muris and comparison of organelle distribution in Giardia muris and Giardia lamblia / P. Nemanic [and others] -- Intestinal distribution, attachment and relationship of giardial trophozoites to Peyer's patches during acute infection in the immunologically intact host / R.L. Owen, P. Nemanic, D.P. Stevens -- Giardiasis in Vail, Colorado / W. Jones, T. Edell -- The presence of Giardia lamblia cysts in sewage and sewage studies from the Chicago area / J.C. Fox, P.R. Fitzgerald -- Axenically cultivated Giardia lamblia : growth, attachment, and the role of L-cysteine / F.D. Gillin, L.S. Diamond -- Giardiasis and the Safe drinking water act / C. Hendricks -- Panel discussion: Current and future research needs / G. Robeck [and others].