RICHARD A. WRIGHT, M.D.
To the editor: In a recent article (Ann Intern Med 81:498-499, 1974), five cases of infections with Giardia lamblia were epidemiologically associated with drinking contaminated water from an underground cistern. This association was strengthened by the microscopic identification of G. lamblia trophozoites in water samples taken from the implicated source. At the Center for Disease Control, working in conjunction with Colorado state health officials, I had the opportunity to investigate several clusters of giardiasis patients in Colorado between 1972 and 1974. Similar to the authors' findings, my investigations invariably identified a source of untreated water as the most likely vehicle
WRIGHT RA. Giardial Infection from Water. Ann Intern Med. 1975;82:589–590. doi: 10.7326/0003-4819-82-4-589_2
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Published: Ann Intern Med. 1975;82(4):589-590.
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