Which parasite requires enteric precautions in patients with severe diarrhea?

Cryptosporidium spp. is considered the correct answer because it is a waterborne protozoan parasite that can cause severe diarrhea, especially in immunocompromised individuals. The infection, known as cryptosporidiosis, is characterized by watery, profuse diarrhea, which can be particularly dangerous due to the risk of dehydration.

Enteric precautions are essential in managing patients with this infection, as the oocysts of Cryptosporidium are resistant to chlorine disinfection and can be readily transmitted via the fecal-oral route. This means that careful hygiene practices, including proper handwashing and minimizing contact with contaminated surfaces, are crucial to prevent further spread, especially in healthcare settings where vulnerable populations may be present.

Giardia lamblia can cause diarrhea as well, but it is generally not associated with the same level of infectious risk as Cryptosporidium, particularly in terms of waterborne outbreaks. Ascaris lumbricoides primarily affects the intestines and is transmitted via ingesting eggs from contaminated food or soil, making enteric precautions less relevant. Cystoisospora belli also causes diarrhea but is less commonly associated with severe outbreaks compared to Cryptosporidium. Therefore, the measures for Cryptosporidium reflect the significant