Albendazole and infections with Trichuris trichiura and Giardia intestinalis.

One hundred and twenty-eight children aged 4 to 11 years old in Dhaka, Bangladesh were treated for infections with Trichuris trichiura and other intestinal parasites using a single dose of 400 mg of albendazole. Only one Trichuris infection was apparently cured although egg counts fell by about 50%. A larger single dosage is recommended to treat Trichuris. Eleven out of 46 infections with Giardia intestinalis were not detected after treatment (p less than 0.001).