SFCC :: STD Basics : STD Risks Chart

What You Can Get if Your Partner is Infected	KNOWN RISKS	POSSIBLE RISKS	UNKNOWN
Performing oral sex on a man	Chlamydia Gonorrhea Hepatitis A* Herpes (RARE) HPV (warts) Shigella* Syphilis	Hepatitis B HIV**	Hepatitis C
Performing oral sex on a woman	Herpes (RARE)	none	HPV (warts)
Receiving oral sex - man	Chlamydia Gonorrhea NGU Herpes Syphilis	none	HPV (warts)
Receiving oral sex - woman	Herpes	none	HPV (warts)
Anal sex - top	Chlamydia Crabs/Scabies Gonorrhea Hepatitis B Herpes HIV HPV (warts) NGU Syphilis	none	Hepatitis C
Anal sex - bottom	Chlamydia Crabs/Scabies Gonorrhea Hepatitis B Herpes HIV *** HPV (warts) Syphilis	none	Hepatitis C
Vaginal sex - man	Chlamydia Crabs/Scabies Gonorrhea Hepatitis B Herpes HIV HPV (warts) NGU Syphilis Trichomoniasis	none	Hepatitis C
Vaginal sex - woman	Chlamydia Crabs/Scabies Gonorrhea Hepatitis B Herpes HIV HPV (warts) Syphilis Trichomoniasis	none	Hepatitis C
Oral-anal Sex	Amebiasis Cryptosporidium Giardia Hepatitis A Shigella	none	HPV (warts)

* You could be at risk if the receiver has just topped someone else.

** Very low risk.

*** Unprotected anal sex is a very high risk activity for a bottom, much more so than for a top. The risk of HIV transmission to a bottom during unprotected anal sex is 15 in 1,000 versus 3 in 10,000 from a bottom to a top.

Kissing, mutual masturbation, and frottage or dry humping are considered safer sex activities, with little to no risk of STD transmission.
Using latex condoms (male or female) significantly reduces the risk of contracting STDs during anal, vaginal and oral sex.
Washing hands and the genital area thoroughly before and after oral-anal sex reduces the risk of transmission of most of the listed STDs and conditions. Condom use reduces transmission risk even further.


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