MEDICAL SCIENCES. For the article “West Nile virus/dengue type 4 virus chimeras that are reduced in neurovirulence and peripheral virulence without loss of immunogenicity or protective efficacy,” by Alexander G. Pletnev, Robert Putnak, Jim Speicher, Eric J. Wagar, and David W. Vaughn, which appeared in number 5, March 5, 2002, of Proc. Natl. Acad. Sci. USA (99, 3036–3041), a footnote symbol in the author line appeared incorrectly due to a printer's error. The correct author line and affiliations appear below.
Alexander G. Pletnev*†, Robert Putnak‡, Jim Speicher*, Eric J. Wagar‡, and David W. Vaughn‡
*Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892; and ‡Department of Virus Diseases, Walter Reed Army Institute of Research, Silver Spring, MD 20910