AIDS and HIV Being one of the most fatal viruses in the nation, AIDS (Acquired Immunodeficiency Syndrome) is now a serious public health concern in most major U.S. cities and in countries worldwide. Since 1986 there have been impressive advances in understanding of the AIDS virus, its mechanisms, and its routes of transmission. Even though researchers have put in countless hours, and millions of dollars it has not led to a drug that can cure infection with the virus or to a vaccine that can prevent it. With AIDS being the leading cause of death among adults, individuals are now taking more precautions with sexual intercourse, and medical facilities are screening blood more t