Which parasite infects the intestinal lining and causes enteritis?

Strongyloides stercoralis is a parasitic nematode known for its ability to infect the intestinal lining, leading to enteritis, characterized by inflammation of the intestinal tract. This parasite is unique among the given options due to its capability to undergo autoinfection, which allows it to persist in the host's body and may lead to chronic infections.

When it infects the intestinal lining, Strongyloides can cause a range of gastrointestinal symptoms, including diarrhea, abdominal pain, and in severe cases, malabsorption. The enteritis caused by this parasite is particularly significant because it can lead to serious complications, especially in immunocompromised individuals.

In contrast, the other options represent parasites that affect the gastrointestinal system differently. For instance, Ancylostoma caninum is a hookworm that primarily causes anemia and may cause additional gastrointestinal symptoms, but it does not typically cause enteritis in the same direct manner as Strongyloides. Clonorchis sinensis, a liver fluke, affects the liver and biliary system rather than causing enteritis, while Hymenolepis nana, a tapeworm, can infect the intestines but usually does not result in significant inflammatory disease like enteritis. Thus, Strong