Examination of 2500 fecal specimens from ward and outpatients at Gorgas Hospital, Panama Canal Zone, revealed intestinal parasites in about 29%. The most common helminths were Trichuris trichiura and hookworm. Giardia lamblia was the most common protozoan. Entamoeba histolytica was found in about 4%. Approximately half of the various infections were accompanied by one or more others. The incidence figures were based on samples received for routine examination and may not reflect the true incidence of parasites in the Canal Zone population.
Present address: Biology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee