The pinworm,Enterobius vermicularis,is the most common nematode parasite in developed countries because the life cycle of this parasite is relatively easy to complete and reinfection and transmission between hosts readily occurs.All of the following,EXCEPT ONE,are attributes of the life cycle that help this parasite thrive.
A)There is no intermediate host.
B)Eggs are very small and easily contaminate bed clothes and linens.
C)Eggs are ingested after sewage contaminates drinking water.
D)Gravid females deposit eggs in the perianal area at night creating an itching sensation.

Question

Quizplus · Accepted Answer

The ingestion of eggs after sewage contaminates drinking water is not an attribute that helps the pinworm thrive. In fact, this is a problem that can be addressed through improved sanitation practices, which would make it more difficult for the pinworm to complete its life cycle and infect new hosts. The other attributes listed, including the lack of an intermediate host, the small size of the eggs that allow for easy contamination, and the behavior of gravid females to deposit eggs in the perianal area at night, all contribute to the pinworm's ability to thrive and spread among human populations.

The Pinworm,Enterobius Vermicularis,is the Most Common Nematode Parasite in Developed