Single-dose ornidazole versus seven-day metronidazole therapy of giardiasis in Kibbutzim children in Israel.

The efficacy of single-dose ornidazole versus seven days metronidazole in the treatment of giardiasis was tested in a randomized study of 75 Kibbutzim children in Israel. All the children treated were clinically cured, and the parasites disappeared from stool examinations after the first follow-up. By the end of the study (21 days after the beginning of treatment), all the patients remained free of symptoms, but cysts of Giardia lamblia were found in the stools of three children from the ornidazole group (p = 0.