<unk>  is a species of hookworm (a type of helminth) commonly known as the New World hookworm. Like other hookworms, it is a member of the phylum Nematoda. It is a parasitic nematode that lives in the small intestine of hosts such as humans, dogs, and cats.<unk> iasis - a type of helminthiasis - is the term for the condition of being host to an infestation of a species of<unk> . Since<unk>  and Ancylostoma duodenale (also known as Old World hookworm) are the two species of hookworms that most commonly infest humans, they are usually dealt with under the collective heading of "hookworm infection".  They differ most obviously in geographical distribution, structure of mouthparts, and relative size.<unk>  has been proposed as an alternative to Trichuris suis in helminthic therapy.
Necator americanus
Oesophagostomum
Ancylostoma braziliense
Gnathostoma hispidum
Onchocerca volvulus
Trichuris trichiura
Amblyomma americanum
Paragonimus westermani