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Giardia muris

Giardia muris is a parasite that causes the disease giardiasis, Some symptoms of Giardiasis are: diarrhea, gas, greasy stool, nausea, cramps, and dehydration.

Microbial Group: 
Protozoan

Acanthamoeba

This amoeba is rare, but it can cause severe infections of the eye, skin, and central nervous system. It can cause three major infections: acanthamoeba keratitis, GAE, and disseminated infection. Acanthamoeba keratitis is an infection in the eye that can cause permanent visual impairment in healthy people. GAE is a serious brain and spinal cord infection that occurs in immunocompromised individuals. Disseminated infection is a widespread infection that affects the skin, sinuses, lungs, and other organs, which is more common in immunocompromised individuals.

Microbial Group: 
Protozoan

Entamoeba coli

Case fatality rates associated with amebic colitis range from 1.9%-9.1% (Aristizábal et al, 1991)

Microbial Group: 
Protozoan

Naegleria fowleri

In the summer of 2007, 6 fatal cases of infection occurred in the United States, all young males (Medscape)

Microbial Group: 
Protozoan

Giardia duodenalis

Giardiasis is not associated with mortality except in rare cases of extreme dehydration, primarily in infants or malnourished children (Medscape)

Microbial Group: 
Protozoan

Cryptosporidium parvum

Cryptosporidium parvum causes cryptosporidiosis, a parasitic infection. The symptoms of cryptosporidiosis are: watery diarrhea, stomach cramps, dehydration, nausea, vomiting, fever, and weight loss. In healthy people, the disease created by the parasite is self-limiting, but in immunosuppressed individuals, the disease may be chronic and severe.

Microbial Group: 
Protozoan

Cryptosporidium hominis

C. hominis causes the disease, Cryptosporidiosis. The symptoms are: diarrhea, vomiting, anorexia, fever, and abdominal cramping. The respiratory system can be affected as well. It is usually self-limiting, but can be harmful to immunocompromised individuals.

Microbial Group: 
Protozoan