Erratum: In the article “Interleukin-1 Mediates a Rapid Inflammatory Response after Injection of Adenoviral Vectors into the Brain,” by T. Cartmell, T. Southgate, G. S. Rees, M. G. Castro, P. R. Lowenstein, and G. N. Luheshi, which appeared on pages 1517–1523 of the February 15, 1999 issue, the printer incorrectly cited the affiliation of Maria G. Castro. The affiliation should be only Molecular Medicine Unit, Department of Medicine, University of Manchester, Manchester M13 9PT, United Kingdom.