Question: 1 in how many have herpes?
Answer: As many as 1 in 2 American adults have oral herpes, which is often caused by herpes simplex virus type 1 (HSV-1). Herpes fast facts. (n.d.). An estimated 1 in 8 Americans ages 14 to 49 years old have genital herpes from herpes simplex virus type 2 (HSV-2), which causes most cases of genital herpes.