Soil Transmitted Helminths (STHs) are a group of parasitic worms that are transmitted through contaminated soil. The major species include Ascaris lumbricoides (roundworm), Trichuris trichiura (whipworm), and Ancylostoma duodenale and Necator americanus (hookworms). They are a significant cause of morbidity in many regions, particularly in tropical and subtropical areas.
