After a Trip to Several South American Countries,a Middle-Aged Man

Multiple Choice

After a trip to several South American countries,a middle-aged man becomes ill.He becomes anemic,loses weight,and runs a fever.The clinician notes a recently healed sore near his nose.Microscopic examination of a blood smear does not reveal anything other than the anemia.What parasitic infection is consistent with this scenario?

A) malaria
B) leishmaniasis
C) Chagas' disease
D) giardiasis
E) balantidiasis