In the News story “Japan jumps towards personalized medicine” (Nature 437, 796; 200510.1038/437796b), the description of aminoglycosides, drugs that can cause ear damage in people with a certain genetic mutation, was wrongly attributed to the cancer drug irinotecan. Both are candidates for Japan's efforts to create personalized medicine as described in the article. Nature wishes to apologize for the confusion.

Contrary to a statement in the Editorial “Responding to uncertainty” (Nature 437, 1; 200510.1038/437001a), there is no evidence that lives have been lost as a result of the significant dip in take-up in Britain of the triple vaccine for measles, mumps and rubella.