And more Americans have it than you would think.
A recent lawsuit against the singer highlights the importance of being honest with your sexual partners.
Sometimes it just comes down to bad luck.
Several vaccines and microbicides are being studied as potential cures.
The gel worked best in women who used it "religiously."
"HSV-1 is now having the opportunity to cause more and more herpes in the genital area," Schaffner said. Scientists should