National Coalition of STD Directors

STD Quick Facts

There are more than 600,000 new cases of gonorrhea and 32,000 cases
of reported syphilis annually.
45 million people have had genital HSV infection, with approximately 1 out of 4 women and 1 out of 5 men being infected.
1 out of 4 people in the United States will contract a sexually transmitted disease (STD) by the time they reach adulthood.
Chlamydia is the most frequently reported bacterial sexually transmitted infection in the US. More than 800,000 cases of Chlamydia are reported each year, but the actual number of people infected with Chlamydia each year is estimated to be nearly 3 million. This is because most people are not aware they are infected and do not seek testing, leading to substantial under-reporting of chlamydia.
The Human PapillomaVirus (HPV), which causes genital warts and can lead to cervical cancer, infects nearly 20 million American men and women, and 5.5 million new cases are reported each year.
There are 78,000 new cases of hepatitis B every year, despite the availability of a preventive vaccine.
An estimated 900,000 Americans may be infected by the HIV/AIDS virus, which strikes an estimated 45,000 more every year, about half of them through sexual contact.

Another rescource for STD facts can be found on the CDC web site listed below.