While sex is built into the very definition of an STI, experts caution that it is possible to contract one without getting it on. Sexually transmitted infections — which affect 1 in 5 Americans ...

The STI Research Program at the University of Alabama at Birmingham has been recognized as a leader in the domestic and global STI research fields for several decades. High performing faculty and ...

Our experts explain exactly how it’s possible to contract an STI or STD without having penetrative sex. Plus, exactly what you need to know about STI testing.

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.

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 ...

Sexually Transmitted Infections The STI Research Program at the University of Alabama at Birmingham has been recognized as a leader in the domestic and global STI research fields for several decades.