A person reports to a clinic complaining of fever and abdominal pain. The abdomen is swollen, and blood tests indicate kidney damage. A stool sample is examined under a microscope and found to contain the egg shown in the figure. The indications are consistent with infection with

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The egg shown in the figure is a Schistosoma mansoni egg, which is the causative agent of the disease schistosomiasis. The symptoms described, including fever and abdominal pain, as well as kidney damage, are consistent with schistosomiasis. Plasmodium falciparum is the causative agent of malaria, Anaplasma phagocytophilium is a tick-borne bacterium that causes human granulocytic anaplasmosis, Toxoplasma gondii causes toxoplasmosis, and Trypanosoma cruzi causes Chagas disease.

A Person Reports to a Clinic Complaining of Fever and Abdominal