Smale, Will. Separating the curds from the whey: Cheddar cheese has gone a long way since it was invented in the quaint Somerset village of the same name back in the Middle Ages. BBC News, Somerset. 21 August 2006.
Since they are in the phylum Nematoda, hookworms have a psuedocoelom that they use for digesting food. -Hookworm eggs gain nutrients via the feces of the host that it has inhabited. -In the larval stage, hookworms are free-living in the soil.
There is very little risk of getting the disease in the United States because of advances in sanitation and waste control. The important factor in getting the disease is walking barefoot on ground where there are feces of people who have hookworm. The larvae (immature form of the worm) enter the skin. The larvae move to the lungs via the bloodstream and enter the airways. The worms are about one half inch long.