Which organism is associated with the transmission of hookworm disease?

Necator americanus is correctly associated with the transmission of hookworm disease. This organism is one of the two main species of hookworms that infect humans, with the other being Ancylostoma duodenale. Necator americanus is prevalent in many tropical and subtropical regions and is transmitted through skin contact with contaminated soil, usually when a person walks barefoot. The larvae penetrate the skin and subsequently migrate through the bloodstream to the lungs, where they are coughed up and swallowed to eventually reach the intestines, where they mature and attach to the intestinal walls to feed on blood.

Ancylostoma braziliense, while a hookworm, primarily infects animals and occasionally humans but is not typically associated with significant disease transmission in humans compared to Necator americanus. Ascaris lumbricoides and Enterobius vermicularis are not related to hookworm disease; they are responsible for other types of helminthic infections, specifically ascariasis and enterobiasis, respectively.