Trend 1999 - 2004. Centers for Disease Control and Prevention. Deaths by Age (1999 to 2004) [Archive]: Deaths - 25 and Over | Country: USA | Cause of Death: Syphilis (A50-A53) | Gender: All Genders, 1999-2004. Data-Planet™ Statistical Ready Reference by Conquest Systems, Inc. Dataset-ID: 005-011-017.