A 50-year-old male visiting from Japan complained of fever, abdominal pain, and jaundice. A stool specimen was collected for ova and parasite examination. A blood specimen was also collected and sent...

A 50-year-old male visiting from Japan complained of fever, abdominal pain, and jaundice. A stool specimen was collected for ova and parasite examination. A blood specimen was also collected and sent to a clinical laboratory for testing. The blood work showed a slightly increased serum bilirubin level. The parasite examination showed small, oval, operculated eggs (approximately 80 um 3 45 um), with opercular shoulders and a knob on the opposite end.

1. What parasite is the probable cause of this infection?
2. What other complications might be expected with this infection?
3. What would be the preferred treatment for this infection?