Sexually Transmitted Disease - Cause - Transmission Probabilities

Transmission Probabilities

The risks and transmission probabilities of sexually transmitted diseases are summarized by act in the table below.

Odds of transmission per unprotected sexual act with an infected person
Known risks Possible or unknown risks
Performing oral sex on a man

With anal to oral practices:

  • Hepatitis A
  • Shigella
  • Hepatitis B (low risk)
  • HIV (very low risk; 0.01%)
  • Hepatitis C (unknown)
Performing oral sex on a woman
  • Herpes
  • Throat gonorrhea
  • Throat chlamydia
  • HPV
Receiving oral sex—man
  • Chlamydia
  • Gonorrhea
  • Non-gonococcal urethritis
  • Herpes
  • Syphilis (1%)
  • HPV
Receiving oral sex—woman
  • Herpes
  • HPV
  • Vaginal thrush
  • Bacterial Vaginosis
  • Gonorrhea
Vaginal sex—man
  • Chlamydia (30–50%)
  • Crabs
  • Scabies
  • Gonorrhea (22%)
  • Hepatitis B
  • Herpes (0.07% for HSV-2)
  • HIV (0.05%)
  • HPV (high: around 40-50%)
  • Non-gonococcal urethritis
  • Syphilis
  • Trichomoniasis
  • Hepatitis C
Vaginal sex—woman
  • Chlamydia (30–50%)
  • Crabs
  • Scabies
  • Gonorrhea (47%)
  • Hepatitis B (50–70%)
  • Herpes
  • HIV (0.1%)
  • HPV (high; around 40-50%)
  • Syphilis
  • Trichomoniasis
  • Hepatitis C
Anal sex—insertive
  • Chlamydia
  • Crabs
  • Scabies (40%)
  • Gonorrhea
  • Hepatitis B
  • Herpes
  • HIV (0.62%)
  • HPV
  • Non-gonococcal urethritis
  • Syphilis (14%)
  • Hepatitis C
Anal sex—receptive
  • Chlamydia
  • Crabs
  • Scabies
  • Gonorrhea
  • Hepatitis B
  • Herpes
  • HIV (1.7%)
  • HPV
  • Syphilis (1.4%)
  • Hepatitis C
Anilingus
  • Amebiasis
  • Cryptosporidiosis (1%)
  • Giardiasis
  • Hepatitis A (1%)
  • Shigellosis (1%)
  • HPV (1%)

Read more about this topic:  Sexually Transmitted Disease, Cause