Ciliary muscle spasm: Related Topics. These medical condition or symptom topics may be relevant to medical information for Ciliary muscle spasm: 1  Ciliary muscle. 2  Muscle spasm (29 causes). 3  Ciliary. 4  Muscle.
Giardia intestinalis is also a common parasite found in drinking water. Both Cryptosporidium and Giardia intestinalis are found in the fecal matter of an infected person or animal. These parasites can be spread when someone swallows water that has been contaminated with fecal matter from an infected person or animal.oth Cryptosporidium and Giardia intestinalis are found in the fecal matter of an infected person or animal. These parasites can be spread when someone swallows water that has been contaminated with fecal matter from an infected person or animal.
The parasite lives on or in the body of the host. A few examples of parasites are tapeworms, fleas, and barnacles. Tapeworms are segmented flatworms that attach themselves to the insides of the intestines of animals such as cows, pigs, and humans.