Sexually transmitted infections (STIs), also referred to as sexually transmitted diseases (STDs), are infections that are commonly spread by sexual activity, especially vaginal intercourse, anal sex and oral sex.[1][2] The most prevalent STIs may be carried by a significant fraction of the human population.
STI | Number of people with disease | Notes |
---|---|---|
Herpes | 4,000,000,000[3] | It is estimated that more than two-thirds of the global population has herpes, though it mostly lies dormant. |
Human papillomavirus infection | 800,000,000[4] | |
Chlamydia | 450,000,000[5] | |
Hepatitis B | 356,000,000[6] | Preventable with the Hepatitis B vaccine |
Gonorrhea | 50,000,000[5] | Globally, 0.8% (women) and 0.6% (men) have gonorrhea. |
Syphilis | 45,400,000[7] | |
HIV/AIDS | 36,700,000[8] |
{{cite journal}}
: |first1=
has generic name (help)CS1 maint: numeric names: authors list (link)