Guideline: Preventive Chemotherapy to Control Soil-Transmitted Helminth Infections in At-Risk Population Groups.

The World Health Organization (WHO) estimates that infections with the main soil-transmitted helminths – the roundworm (Ascaris lumbricoides), the whipworm (Trichuris trichiura) and the hookworms (Ancylostoma duodenale and Necator americanus) – contribute 5.18 million disability-adjusted life-years worldwide in 2010. Globally, an estimated 820 million people are infected with roundworms, 460 million with whipworms and 440 million with hookworms.

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