Intestinal worms

© C. Carnemark/World Bank. Children lining up to recieve treatment for soil-transmitted helminthiases, Nigeria, 2012.

Soil-transmitted helminths
Soil-transmitted helminth infections are among the most common infections worldwide and affect the poorest and most deprived communities. They are transmitted by eggs present in human faeces which in turn contaminate soil in areas where sanitation is poor.

The main species that infect people are the roundworm (Ascaris lumbricoides), the whipworm (Trichuris trichiura) and the hookworms (Necator americanus and Ancylostoma duodenale.

Soil-transmitted helminth infections are widely distributed in all WHO Regions. | Read more

fact buffet

2014

45%Reported coverage school-age children

Soil-transmitted helminthiases: number of children treated in 2014

2015

390 MillionNumber of deworming tablets for school age children donated in 2015. Expected coverage school-age children: >50%

Soil-transmitted helminthiases: number of children treated in 2014

2016

540 MillionNumber of deworming tablets for school age children requested for 2016. Expected coverage school-age children: >60%

Soil-transmitted helminthiases: number of children treated in 2014

STH in the news!

18 December 2015 | Geneva
Soil-transmitted helminthiases: number of children treated in 2014
Weekly epidemiological record, No. 51/52, 2015, 90, 701–712


17 July 2015 | Geneva
Deworming campaign improves child health, school attendance in Rwanda


NTD Country profiles

Country profiles present the most recent epidemiological information on targeted diseases and chart progress in implementing preventive chemotherapy in the country.

If you have any queries, please do not hesitate to contact us at Email:wormcontrol@who.int