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Necator Americanus, also known as Hook worms, is a parasite that can live in the small intestines of humans. It is most common in areas where sanitation is poor and warm, moist areas. Its is acquired mainly by walking on contaminated soil barefoot. Symptoms include itching and localized rash. In severe cases someone may experience abdominal pain, diarrhea, loss of appetite, weight loss, and anemia. To prevent Nectator Americanus do not walk barefoot in areas where they are common, and avoid areas where there is human fecal contamination of the soil. A physician would prescribe anthelimintic medications or other drugs that would rid the body of the parasitic worms. Albendazole and Mebendazole are drugs of choice for treatment. It is usually treated for 1-3 days.