Corrections and Clarifications
In Christopher T. Walsh's Perspective "Vancomycin resistance: Decoding the molecular logic" (16 July, p. 308), it is stated incorrectly that "about 95% of Staphylococcus aureus isolates are resistant to the
-lactam methicillin." About 95% of S. aureus are resistant to penicillin, but the majority (perhaps 70 to 90%) are still sensitive to methicillin.