What symptom is associated with Cryptosporidium Parvum infection?

Cryptosporidium parvum is a protozoan parasite known to cause a gastrointestinal illness called cryptosporidiosis. The hallmark symptom of this infection is severe watery diarrhea, which can lead to dehydration, especially in immunocompromised individuals. Nausea and vomiting are also common symptoms associated with this infection, although they may not be as prominent as diarrhea.

By recognizing that the disease can present with a combination of symptoms—namely nausea, severe watery diarrhea, and vomiting—it becomes clear why the option indicating all symptoms is correct. This holistic view of the symptoms is crucial for understanding the impact of Cryptosporidium parvum on health, particularly in identifying and managing the illness effectively.