The Division of STD Prevention of the US Centers for Disease Control has recently released this update (MMWR 1998;47(No. RR-1)) to the 1993 set of guidelines with the same title. The guidelines were developed by CDC staff after consultation with a "group of invited experts" in early 1997. Included are sections on various sexually transmitted diseases, including HIV, Genital Ulcers, Epididymitis, Human Papillomavirus Infection, and vaccine preventable STDs, among others. Guideline evidence is briefly discussed in each section of the report, and the CDC is committed to providing "more comprehensive, annotated discussions of such evidence...in background papers that will be published in 1998." Note that in the HTML version of the report, some of the interior links within chapters are inaccurate. In those cases, it is prudent to click on the section headings to find the relevant information.