<unk>  is a species of parasitic protozoan<unk> s. The species causes the<unk> asis diseases in humans and animals in America. The species is transmitted by the feces of reduviid bugs.
Human American<unk> asis, or Chagas disease, is a potentially fatal disease of humans. It has two forms, trypomastigote found in human blood and amastigote found in tissues. The acute form usually goes unnoticed and may present as a localized swelling at the site of entry of the parasites in the skin. The chronic form may develop 10 to 20 years after infection. This form affects internal organs (e.g. the heart, esophagus, colon and the peripheral nervous system). Affected people may die from heart failure.
Therapy consists of Nifurtimox and benznidazole for acute cases.  There is currently no effective therapy for chronic cases.
Trypanosoma cruzi
Schistosoma mansoni
Entamoeba histolytica
Blastocystis
Wuchereria bancrofti
Ascaris lumbricoides
Cryptosporidium hominis
Trichuris trichiura