QuickStats: Age-Adjusted* Trends in the Prevalence of Herpes Simplex Virus Type 1 (HSV-1) and Herpes Simplex Virus Type 2 (HSV-2) Among Adolescents and Adults Aged 14-49 Years - United States, 1999-2000 Through 2015-2016.

During 2015-2016, the age-adjusted prevalence of HSV-1 was 48.1% among adolescents and adults aged 14-49 years (50.9% for females and 45.2% for males). Prevalence was higher for females than males in most 2-year periods from 1999-2000 to 2015-2016. Also during 2015-2016, the age-adjusted prevalence of HSV-2 for those aged 14-49 years was 12.1% (15.9% among females compared to 8.2% among males) and was higher for females than males for all 2-year periods. Prevalence significantly declined from 1999-2000 through 2015-2016 for HSV-1 and HSV-2 among both males and females.