In Am J Trop Med Hyg 74: 342–344 by Alonso et al, there is an error in the fifth paragraph of the discussion on page 343. The sentence reads “However, three years later a treatment failure with PZQ at a standard dose in a returning traveler with S. haematobium infection was reported in whom a course of 40 mg/kg for three consecutive days was finally curative.” The sentence should have refered to a case of S. mansoni, not S. haematobium.