How likely is it for a person to contract STDs (HIV, HPV, gonorrhoea, syphilis, chlamydia etc.) as a result of unprotected sex?

Doctor's Answers 2

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Dr Jipson Quah

General Practitioner

Having unprotected sex puts one at high risk of getting HIV and STDs. People who have an STD may be at increased risk of getting HIV. This is because the behaviour that puts someone at risk for one infection (eg not using condoms, multiple partners, etc) often put them at risk for other infections.

STD and HIV infections also tend to be linked, so when someone acquires an STD, it is likely that they got it from someone who may be at risk for other STDs and HIV. A sore or inflammation from an STD also allows it to be infected by HIV, that otherwise would have been stopped by intact skin.

To avoid getting STDs and HIV, using condoms is one of the most effective ways. Condoms should be put on before any sexual contact as HIV can be transmitted through pre-cum, vaginal fluid, and from anal mucus. There are also medications that can be taken by HIV-negative people to prevent HIV.

Ask a healthcare professional if you want to know what medications are right for you. Other ways to lower your chances of getting STDs and HIV includes:

  • Reducing the number of sexual partners
  • Limit or eliminate drug and alcohol use before and during sex
  • Anal sex has also been shown to have the biggest risk of transmitting HIV because the lining of the anus is more delicate than the lining of the vagina, so it is more easily damaged and provides an easier route for HIV to enter the body.

The risk of contracting a sexually transmitted infection (STI) from unprotected sex depends on a few factors. If the sexual partner has had multiple sexual partners and or is high-risk partner eg. commercial sex worker, the risk of contracting an STI will be significantly higher. If you have multiple partners and engage in unprotected sex, the risk will be very much higher too.

If you or your partner is having an active infection or having blisters, sores and ulcers at the genital area, the risk of contracting an STI is also increased.

The best way to minimize the risk of contracting an STI is to engage in protected sex with a condom and limit the number of sexual partners. It is important to know your sexual partner's past sexual history and exposure too as the greater the number of partners, the higher the risk.

Similar Questions

What are the risks of receiving unprotected oral sex?

With unprotected oral sex, there is a risk of transmission of STDs, particularly for infections like gonorrhoea and herpes simplex virus (HSV). The throat can harbour the bacteria that causes gonorrhoea and this can spread through unprotected oral sex. For HSV infection, the risk of spread is highest if the person has a history of cold sores and has active blisters or ulcers. The risk of spread is significantly less in the absence of active lesions. Viral warts or HPV infection can spread through oral sex too.

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Answered By

Dr Colin Theng

Dermatologist

Where can I get anonymous testing for HIV and STDs in Singapore?

Anonymous HIV testing does not require the person to provide any names, NRIC numbers or contact numbers. Instead, a number is usually assigned to the test which allows the person being tested to receive the test results. No personal particulars are recorded, even with positive results of the HIV tests. There are quite a number of clinics in Singapore providing this service. You can just google for the list of clinics. You can type 'Anonymous testing for HIV', and the list of clinics will appear. You can also choose a clinic near your place.

Photo of Dr Beng Yeong Ng

Answered By

Dr Beng Yeong Ng

Psychiatrist

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