The hookworm is a
parasitic nematode worm that lives in the
small intestine of its host, which may be a
mammal such as a
dog,
cat, or
human. Two
species of hookworms commonly infect humans,
Ancylostoma duodenale and Necator americanus.
Necator americanus predominates in
the Americas,
Sub-Saharan Africa,
Southeast Asia,
China and
Indonesia, while A. duodenale predominates in the
Middle East,
North Africa,
India and (formerly) in southern
Europe. Hookworms are thought to infect 800 million people worldwide. The A. braziliense and A. tubaeforme species infect cats, while A. caninum infects dogs.
Uncinaria stenocephala infects both dogs and cats.
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