STIs can be acquired by a man through any form of sexual contact. The question is which STIs can you acquire from a specific type of sex act.

We will approach this based on the type of sexual engagement – kissing, petting, getting or giving oral sex, vaginal penetration or anal penetration.

Below represents the risk to the man based on the sex act performed.

HIV Chlamydia Gonorrhoea Syphillis Herpes Hepatitis B *Hepatitis C Trichosomonas Mycoplasma/ Ureaplasma
Kissing No risk, provided no open sores No risk No risk Yes risk exists – especially if there are punched out sores in the mouth Yes risk exists especially for Herpes Type I Potential risk exists with deep wet kissing – Not dry kissing No risk – Unless there are open bleeding sores in the mouth Next to no risk No risk
Petting(rimming of vagina) No risk, provided no open sores or exchange of body fluids/ blood No risk No risk Yes, if there are open sores Yes risk exist No risk No risk No risk No risk
Oral sex (cunnilingus) – giving oral sex to vagina Extremely low risk Yes risk exist. Chlamydia can be transmitted to your throat Yes risk exists. Gonorrhoea can be transmitted to your throat Yes risk exists, esp if there are sores around the vagina Yes risk exists Yes risk exist esp if bleeding/sores in vagina Negligible risk No risk No risk
Oral Sex(fellatio)- getting a blow job to the penis Negligible risk provided no open sores or bleeding in the woman’s mouth Yes risk exists. Yes risk exists. Yes risk exists. Yes risk exists. Yes risk exists esp if bleeding/ sores in the women’s mouth Negligible risk Low risk Low risk
Vaginal sex – penetrative Yes risk exists. Yes risk exists. Yes risk exists. Yes risk exists. Yes risk exists. Yes risk exists. Yes risk exists. Yes risk exists. Yes risk exists.
Anal Sex – penetrative Yes risk exists. Yes risk exists. Yes risk exists. Yes risk exists. Yes risk exists. Yes risk exists. Yes risk exists. Yes risk exists. Yes risk exists.

*The risk of acquiring Hepatitis C via sexual contact is significantly lower than Hepatitis B. Hepatitis C is more likely transmitted via injection drug use, needle stick injury, organ transplant, birth to a hepatitis C infected mother, receipt of blood products or direct blood contact into open wounds.

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