Pinworm infection (enterobiasis) in children; a comparative study of four oxyuricides.

THE HIGH incidence of pinworm infection, in both children and adults, has been reported from all parts of the world. It is estimated that there are 209,000,000 cases of pinworm infection throughout the world. 1 The incidence among school children varies considerably in different areas. Stoll and co-workers 2 reported the lowest incidence, 1%, in Guam school children. Sutliff and Echandi 3 reported an incidence of 4.3% in hospitalized children in San Jose, Costa Rica. Killingsworth and co-workers 4 reported an incidence of 32% in Port Arthur and Houston, Texas. Askue (personal communication) reports an incidence of 30% in clinic and hospitalized children in Philadelphia. Kuitunen-Ekbaum 5 reported an incidence of 60% in Toronto, Canada, children. Cristovao 6 in a study of 309 children in Sao Paulo, Brazil, found 60% infected. Voplenko 7 in a study of 6,552 Russian children reported a low incidence of 17%. The incidence reported from