Soil transmitted helminthiasis in Kathmandu, Nepal.

A total of 200 soil samples taken from different sites and 1,504 stool samples collected from school children (n = 188) and patients (n = 1,316) visiting the health care centres in Kathmandu Valley were included in this study. Soil samples were investigated for the presence of parasitic eggs using sucrose flotation technique. Stool samples were examined by formal-ether concentration and direct smear techniques.