Parasitic worm infections spread through contaminated soil, water, food, or direct skin contact. Soil-transmitted helminths such as roundworms and hookworms infect people who ingest microscopic eggs from unwashed produce or contaminated hands. Tapeworms spread by consuming undercooked meat containing larval cysts. Schistosomiasis occurs when larvae in freshwater penetrate the skin. Poor sanitation, inadequate hygiene, and unsafe drinking water increase transmission risk. In endemic regions, close human and animal contact sustains the life cycle. Early diagnosis and antiparasitic treatment often sourced through a reliable nizonide supplier are critical to interrupt transmission, reduce reinfection rates, and protect community health through coordinated public health interventions.