KEy FACTS

Soil-transmitted helminth infections are caused by different species of parasitic worms.
They are transmitted by eggs present in human faeces, which contaminate the soil in areas where sanitation is poor.
Approximately two billion people are infected with soil-transmitted helminths worldwide.
Infected children are physically, nutritionally and cognitively impaired.
Control is based on:
- periodical deworming to eliminate infecting worms
- health education to prevent reinfection
- improved sanitation to reduce soil contamination with infective eggs.
Safe and effective medicines are available to control infection.