Where we work


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  • India is the country with the highest number of worm infections globally; 220 million children at risk for STH infections.
  • We provide technical assistance to the Ministry of Health and Family Welfare along with customized assistance to nine states: Bihar, Rajasthan, Madhya Pradesh, Uttar Pradesh, Jharkhand, Chhattisgarh, Telangana, Tripura, and Karnataka.
  • In February 2015, we helped the national government initiate National Deworming Day (NDD). The program reach extends to preschools, government schools, private schools, and out-of-school children, targeting all children aged 1-19. As of February 2017, NDD scaled up to 34 states and union territories, with the government reporting treatment of over 260 million children.


  • In Kenya, more than 5 million school-age children are at risk of intestinal parasitic worms, including STH and schistosomes.
  • We have supported the Government of Kenya’s school-based deworming at national scale since 2012, annually treating children at risk for STH and schistosomiasis through a collaboration between the Ministry of Education and Ministry of Health. In 2016, the program treated 6.41 million children (including 480,000 for schistosomiasis) in 16,708 schools across 27 counties. The program reached 83% of at-risk children, exceeding the WHO’s 75% coverage target.
  • Across the 27 counties, STH infections have steadily reduced, from baseline infection of 33.4% to 15.9% after three years of treatment (including a 19% reduction in moderate-to-heavy intensity infections); schistosomiasis infection reductions have also been achieved.


  • Ethiopia is the fifth most burdened country globally by childhood worm infection; 18.4 million school-age children and 6.6 million preschool-age children are at risk for STH infection. Approximately,  14.6 million school-age children are at risk of schistosomiasis.
  • The national deworming program is led by the Federal Ministry of Health, and implemented in partnership with the Ministry of Education and the Ethiopian Public Health Institute. We partner with the Schistosomiasis Control Initiative (SCI) to provide technical assistance to national and sub-national government ministries.
  • As of 2016, the Government of Ethiopia has treated 15 million school-age children children for STH and 4.6 million for schistosomiasis, surpassing targets by reaching 87% of children at risk for STH and 78% at risk for schistosomiasis. The program intends to distribute over 100 million deworming treatments to school-age children by 2019.


  • Nigeria is the third most burdened country in terms of its number of children at risk for worm infections. Approximately 28.6 million school-age children are at risk for STH infection; 23.8 school-age children are at risk of schistosomiasis.  
  • We partner with Cross River state and RTI International to provide technical assistance to the State Ministries of Health and Education; our support for school-based treatment complements community-based treatment of other neglected tropical diseases. In its first year of operation, the program treated over 527,600 school-age children for STH and schistosomiasis.
  • We are engaging with the Federal Ministry of Health to support development of a national-level deworming strategy and collaborating on further expansion of school-based deworming in Nigeria. In 2017, our state level support expanded to three additional partner states: Rivers, Oyo, and Ogun.   


  • In Vietnam, we partner with Thrive Networks to provide technical assistance to the Government of Vietnam’s deworming program in four provinces.
  • In November 2016 the program treated over 715,000 children, achieving over 90% coverage.
  • Exciting research opportunities exist as part of this program. We are conducting a randomized controlled trial (RCT) to understand whether a school-based hygiene education package is successful and cost-effective at reducing reinfection among school-age children when combined with school-based deworming.


  • In 2016 we worked with our partner, Interactive Research & Development (IRD), in coordination with provincial governments in Pakistan, to carry out the country’s first national-level STH survey to map worm prevalence and intensity.
  • Data collected from the survey revealed an estimated 17 million school-age children require annual treatment for STH.
  • We plan to work with health and education stakeholders at the national and provincial level to support the initiation of a school-based deworming program in areas recommended for mass treatment, continuing our partnership with IRD.