title: Erratum.
abstract: In an article by Colin Norman on research on AIDS vaccines, "AIDS virus presents moving target" (News and Comment, 20 Dec., p. 1357), it was stated that the official goal for getting a vaccine ready for general use has been put back to 2000. The plan, drawn up by the Department of Health and Human Services, in fact sets the goal of "eliminating transmission of HTLV-III infection" by 2000 and assumes that "It is unlikely that a vaccine or therapy to substantially limit transmission will be generally available before 1990."