Necator americanus is a parasitic worm that lives in the intestines of humans and animals, causing anemia and other health issues. There are various synonyms for the word Necator americanus, including hookworm, Ancylostoma duodenale, and Ancylostoma caninum. These species are a major concern in developing countries with poor sanitation and hygiene practices, where people become infected by walking barefoot on contaminated soil or consuming food or water that is not properly sanitized. Treatment of Necator americanus infection involves medication, often followed up by preventive measures such as improved sanitation standards and education on hygienic practices.