New CDC data find that nearly 2.3 million cases of chlamydia, gonorrhea, and syphilis were diagnosed in the United States in 2017. This surpassed the previous record set in 2016 by more than 200,000 cases and marked the fourth consecutive year of sharp increases in these sexually transmitted diseases (STDs). The CDC analysis of STD cases reported for 2013 and preliminary data for 2017 shows steep, sustained increases