The statistics from the Center For Disease Control have concluded that sexually transmitted diseases have made a sharp incline in 2015.

Gonorrhea, chlamydia and syphilis, the three most common STDs in this country, have been on the rise for the past few years. Gonorrhea and chlamydia cases have risen between 2013 and the present; after a time when those diseases were on a decline.

Chlamydia, the most common of the three, had 1.4 million cases found in the U.S. in 2014, which is 456 people per 100,000. There were reportedly 350,000 cases of gonorrhea and 20,000 cases of syphilis. Syphilis can cause serious health issues including blindness, while chlamydia can permanently damage a woman’s reproductive organs. The report revealed that the highest rate of chlamydia and gonorrhea cases were in people between 15 and 29 years of age. Most syphilis cases were in people 20 to 29 years old. The highest rate of syphilis is among homosexual men.

There could be many other cases that have may not been diagnosed because the infections did not cause symptoms, which is typical of chlamydia and gonorrhea, and because people did not have adequate health care or decided not to get get tested.

Many also believe that the social media movement and the rise in “hook up” apps such as Tinder and OkCupid have helped boost the rate of STDs with promiscuous people having immediate access to each other.