'''Sexually transmitted diseases''' (STDs) are illnesses transmitted by sexual contact. STDs comprise a large and diverse set of disease entities which include [[virus]]es, bacteria, protozoa, and arthropods. Many of these diseases can cause great harm before symptoms are detected.
The incidence of [[gonorrhea]] in the United States peaked during the [[Carter administration]], but began dropping during the [[Reagan administration|Reagan years]]. The [[chlamydia]] rate overtook gonorrhea during the [[Bill Clinton|Clinton years]]. <
== List of STDs and their Signs and Symptoms==