Answer:
She got infected through the water she drank at the stream.
Explanation:
Protozoa is a type of pathogenic microorganisms.
Giardia are flagellate protozoa that cause the disease called giardiasis. The parasites enters the body through ingestion of contaminated food or water The food or water are usually contaminated by the feces of infected people or animals.
The protozoa attach to the lining of the host’s small intestine, where they prevent the host from fully absorbing nutrients. They may also cause diarrhea, abdominal pain, and fever.
The symptoms in the question above points to a likelihood that Terri’s sickness was caused by a Giardia protozoa.
In the given case, Terri became infected by Giardia protozoa, which is responsible for giardiasis.
• The majority of protist diseases in humans are caused by protozoa, or animal like protists.
• A flagellated protozoan, which cause giardiasis is giardia. It is the parasite, which invades the body via water or food that has got infected by feces of infected animals or people.
• The protozoa combines with the host's small intestine lining, where they inhibit the host from absorbing the nutrients completely.
• They may also result in abdominal pain, diarrhea, and fever.
Thus, in the given case, it is clear that Terri has consumed contaminated water from a stream that has resulted in the invasion of Giardia within the body, which eventually has caused diarrhea, abdominal pain, and fever.
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