[Eosinophilia, diarrhea]

A 46-year-old Swiss woman presents with intermittent abdominal pain and persistent eosinophilia that is suggestive of helminthic etiology. Though her stay in Africa goes back > 35 years, an imported disease is a possibility. However, contact with a puppy suggests a locally acquired organism. Antibodies to filariae and Toxocara are demonstrated in the serum. Following treatment with albendazole 400 mg daily for 14 days the patient makes a full recovery, and the final diagnosis is active Toxocara canis infection.