Hookworm, an intestinal parasite that usually causes diarrhoea or cramps. Hefty infestation with hookworm may be really serious for newborns, kids, expectant mothers, and persons that malnourished. Hookworm attacks take place mainly in tropical and subtropical climates and influence about 1 billion men and women -- about one-fifth around the globe's populace. One of the most typical species of hookworm, Ancylostoma duodenale, is situated in south European countries, north Africa, northern Asia, and areas of south usa. An extra species, Necator americanus, ended up being as soon as extensive in southeastern United States early in the twentieth century.