/* Neisseria gonorrhoeae (gonorrhea) */HTTP --> HTTPS #3, replaced: http://www.cdc.gov → https://www.cdc.gov
[[Gonorrhea]], another very common STD, may also have this risk. A majority of US teenagers who admit to having sex are infected with an STD.<ref>4 out of 10 teenagers are sexually active; over half of this 40% (25% of all teenagers) have an STD.[http://host.madison.com/ct/news/local/health_med_fit/article_96d0ee57-e3dc-59d7-a5ec-e5cbc5b71ffc.html]</ref> There are 820,000 new cases each year in the U.S.<ref name="piyl"></ref>
The incidence of gonorrhea in the United States peaked during the [[Carter administration]], but began dropping during the [[Reagan administration|Reagan years]]. However, the chlamydia rate overtook gonorrhea during the [[Bill Clinton|Clinton years]].<ref>
*Many people have no symptoms.