We report an asplenic patient who was infected with Babesia divergens-like/MO-1. The clinical course was complicated by multiorgan failure that required intubation and dialysis. The patient recovered after an exchange transfusion and antimicrobial drug therapy. Physicians should be alert for additional cases, particularly in asplenic persons.
Keywords: B. divergens–like/MO-1; Babesia divergens; Michigan; United States; asplenic patient; babesiosis; emerging infection; erythrocyte exchange transfusion; parasitemia; parasites; protozoa; tickborne disease; ticks; vector-borne infections.