While sex is built into the very definition of an STI, experts caution that it is possible to contract one without getting it on.

Labeling monkeypox as a "sexually transmitted infection" could ensure free access to some health care, but the virus doesn't fit the classic definition.

By definition, an STI is a microorganism, such as bacteria or viruses, that mainly pass between people via blood, semen, vaginal fluids, or other bodily fluids during sexual activities.

STI cases of chlamydia, gonorrhea and syphilis rose in 2021, following a slight dip during the pandemic, according to a CDC report.

The U.S. Centers for Disease Control and Prevention estimates that more than 20 million new sexually transmitted infections occur annually in the United States, contributing to roughly 110 million ...

A common vaginal condition known as bacterial vaginosis (BV) may actually be a sexually transmitted infection (STI), according to researchers. The NHS currently says BV is caused by "a change in ...

As part of September’s Sexual Health Month, the APHC wants to re-engage soldiers and leaders in the war on sexually transmitted infections.

A common vaginal condition known as bacterial vaginosis (BV) may actually be a sexually transmitted infection (STI), according to researchers. The NHS currently says BV is caused by "a change in ...