Researchers discovered traces of the bacteria that causes syphilis in human remains from long before Christopher Columbus' travels in Finland, Estonia and the Netherlands.
Syphilis and other STDs are on the rise in the U.S. and drug use and unprotected sex may be to blame.
Sexually transmitted infections in animals can have evolutionary implications.
Doctors found the girl had been infected with chlamydia and gonorrhea following the sexual assault.
As President Donald Trump flies Air Force One to Hanoi to meet with North Korean dictator Kim Jong-Un, it's worth remembering how he got out of going to Vietnam in the summer of 1968.
If left untreated, syphilis can cause serious health conditions, including blindness and neurological disorders that can result in death.
The Kanamara Festival is held annually on the first Sunday of April and raises money for research into sexually-transmitted diseases.
The biggest declines in sexual activity were among ninth and tenth graders and black and Latino teenagers, the study found.
Lying is an inherent aspect of reporting sexual behaviors.
Was Tinder's addition of a STD testing locator just a pawn to settle a political feud?
Young gay men are not accessing basic primary care that can keep them healthy.