hookworm -
Any of various parasitic bloodsucking roundworms which cause disease, especially the species Ancylostoma duodenale and Necator americanus. They have hooked mouthparts and enter their hosts by boring through the skin.
Wikipedia
Darjeeling, Hooghly District, West Bengal, India (Pal et al. 2007) • 42.8% infection rate of predominantly N. Americanus although with some A.