STI |
Type |
Sexual transmission |
Nonsexual transmission |
Curable? |
Chancroid |
Bacterial |
Vaginal, anal, and oral sex |
None |
Yes |
Chlamydia |
Bacterial |
Vaginal and anal sex Rarely, from genitals to mouth |
From mother to child during pregnancy |
Yes |
Gonorrhea |
Bacterial |
Vaginal and anal sex, or contact between mouth and genitals |
From mother to child during pregnancy |
Yes |
Hepatitis B |
Viral |
Vaginal and anal sex, or from penis to mouth |
In blood, from mother to child during delivery or in breast milk |
No |
Herpes |
Viral |
Genital or oral contact with an ulcer, including vaginal and anal sex; also genital contact in area without ulcer |
From mother to child during pregnancy or delivery |
No |
HIV |
Viral |
Vaginal and anal sex Very rarely, oral sex |
In blood, from mother to child during pregnancy or delivery or in breast milk |
No |
Human papilloma-virus |
Viral |
Skin-to-skin and genital contact or contact between mouth and genitals |
From mother to child during delivery |
No |
Syphilis |
Bacterial |
Genital or oral contact with an ulcer, including vaginal and anal sex |
From mother to child during pregnancy or delivery |
Yes |
Trichomoniasis |
Parasite |
Vaginal, anal, and oral sex |
From mother to child during delivery |
Yes |