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Robert L. Frachtman, MD; Charles D. Ericsson, MD; Herbert L. DuPont, MD

Arch Intern Med. 1982;142(7):1299.

Abstract
• Paired serum samples were evaluated for the presence of antibodies to Entamoeba histolytica in 326 healthy college students from the United States who lived in Guadalajara, Mexico, for an average of four weeks. One hundred eighty of these students had an enteric illness develop, but no stool test results were positive for ameba. An indirect hemagglutination assay was the serologic method used, and no seroconversion was demonstrated. This finding confirms the belief that amebiasis is a rare cause of diarrhea among short-term travelers to Mexico.

(Arch Intern Med 1982; 142:1299)

Author Affiliations
From the Department of Internal Medicine (Drs Frachtman, Ericsson, and DuPont) and the Program in Infectious Diseases and Clinical Microbiology (Drs Ericsson and DuPont), University of Texas Medical School, Houston. Dr Frachtman is now with the University of Washington School of Medicine, Seattle.

Footnotes
Accepted for publication April 2, 1982.

Reprint requests to 1727 Freeman Bldg, 6431 Fannin St, Houston, TX 77030 (Dr DuPont).

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