Caused by Necator americanus
Larvae penetrate through intact skin on contact with feces-contaminated soil
Enter the bloodstream, ascend the trachea, descend the esophagus to differentiate into adult worms, and migrate to the upper intestine where they attach to the mucosal wall and feed on host blood
Commonly occurs in warmer climates (tropics, Southeast United States). 
Enter the bloodstream, ascend the trachea, descend the esophagus to differentiate into adult worms, and migrate to the upper intestine where they attach to the mucosal wall and feed on host blood
Hookworm
Taenia saginata
Tapeworm
Taenia solium 
Bed bugs
Diphyllobothrium latum
Pseudoparasites
Hymenolepis nana