In recent years significant progress has been made in understanding the ecology,
epidemiology and related morbidity and development of new tools for the control of soil-
transmitted helminths. Such knowledge has recognized the impact of helminth infections on
the health of infected groups and has created a rational basis for their control.
Schoolchildren harbour some of the most intense helminthic infections, which produce
adverse effects on health, growth and scholastic performance. However, although great …