There are 20 million estimated sexually transmitted diseases diagnosed each year in the United States, and there are 110 million men and women with estimated existing infections, according to the CDC, based on 2008 statistics.
However, when we look at who is developing these STDs the most, we have to pay attention to age group as well as gender.
Nearly 50 percent of those who develop these infections are in the 15-24 years old age group, even though only one-quarter of this age group is thought to be sexually active, wrote Livescience.
In this age group, the incidence of all types of STDs is approximately equal, 51 percent of young women and 49 percent of young men based on the eight most common STDs.(1)
If all ages are combined, women still have a little higher incidence rate of STDs than men.(1)
1) Human Papillomavirus (HPV)
HPV is the most common STD in both men and women. The estimated yearly incidence of HPV is 14,100,000. More than 79,000,000 are estimated to already have HPV.
HPV may not show symptoms, and currently only women are tested for it via HPV tests during their pelvic exams.
Symptoms of the infection can clear within one to two years. However, it is also thought to lay dormant in one’s body and may cause reinfection years later. HPV high-risk strains have been linked to incidence of cancer in both men and women.(3)
Chlamydia is the most commonly reported STD in the United States and occurs more often in women. There are 2,860,000 new cases estimated each year and 1,570,000 existing cases.
And its worth noting that only about one-quarter of women with HPV and 50 percent of the men with it show symptoms of the infection, reported WebMD. That means the occurrence is probably even higher.
The incidence of trichomoniasis is estimated at 1,090,000 cases a year with 3,710,000 existing cases.