Which of the following is NOT transmitted via the fecal/oral route?

Dracunculus medinensis, also known as the Guinea worm, is primarily transmitted through the ingestion of water contaminated with the larvae present in copepods, which are tiny water fleas. When people drink this contaminated water, the larvae are released in the intestine, and the worms can grow and eventually exit the body through the skin, often causing painful ulcers. Unlike the other options, which involve transmission through fecal contamination of food or water, the transmission of Dracunculus medinensis is specifically linked to water sources.

In contrast, diseases such as Cryptosporidiosis, Giardiasis, and Amoebic Dysentery are all transmitted via the fecal/oral route, which involves pathogens being shed in the feces of an infected individual and subsequently ingested by another person, typically through contaminated food or water. This key distinction in transmission methods is what sets Dracunculus medinensis apart from the other pathogens listed.