What's the chance of an STI?
What's the chance of an STI?
Unsafe sex can happen to anyone, often you are in 'the heat of the moment' and at those moments you don't always think of a condom. The next day this can start to gnaw at you and worry about not having contracted an STD. But what is the actual probability of an STD?
What are the most common STDs?
Chlamydia and gonorrhoea are most common in the Netherlands. Every year, 60,000 people in the Netherlands are diagnosed with Chlamydia. Gonorrhoea is diagnosed in about 15,000 people every year. Of this, 74% is a man who has sex with men.
What are the odds of me catching Chlamydia or Gonorrhoea?
Now we know how often Chlamydia and Gonorrhoea occur in the Netherlands, but what is the chance that you will get this from having unsafe sex once?
For women, every time you have unsafe sex with an infected partner, you have a 45% chance of contracting Chlamydia and an 80% chance of contracting Gonorrhoea.
For men, every time you have unsafe sex with an infected partner, you have a 28% chance of contracting Chlamydia and a 77% chance of contracting Gonorrhoea.
The risk of an STD after unsafe sex with an infected partner is different for men and women because women have a larger mucous membrane surface in the vagina.
What are the chances of me getting HIV?
Everyone is afraid of HIV, what many people don't know is that the risk of HIV in one-time vaginal contact is not that high. The risk of HIV that men run at a time of unsafe vaginal contact with an infected partner is 0.014%, for women this is 0.2%.
In case of anal contact, the chance of transmission is slightly higher, this has to do with the fact that the anus is more easily damaged during sex and that small blood vessels can develop, which increases the chance of transmission.
For anal sex, the risk of HIV per time of unsafe sexual contact is 0.06-0.2% (top) and 0.1-3% (bottom).
A few important things to know is that HIV can also be prevented during unsafe sex by taking a PrEP or PEP course. These are drugs that protect you from an HIV infection. Read more about PrEP.
What are the odds of me catching Syphilis?
Syphilis is a multi-phase STD. Syphilis often starts with an ulcer, the moment this ulcer is visible, the chance of transmission for both men and women is 30%. This ulcer often goes away by itself, but even when the ulcer is no longer present, the person can still be contagious.
Better safe than sorry!
Although the risk of an STD does not seem alarmingly high in all cases, it is true that you always run the risk of having unsafe sex. You can compare it to people who buy a lottery ticket for the lottery, the chance of winning a lottery is 0.0002% but there is always someone who wins. That's why it's important that you always use a condom when you have the opportunity to do so.
If you have had unsafe sex, always have an STD test. One Day Clinic tests for all STDs and offers direct treatment when needed. The Amsterdam location (the only one in the Netherlands!) also offers the possibility of an innovative test that gives almost 100% reliable results on Chlamydia and Gonorrhoea within 2 hours.
Schedule an appointment for an anonymous test directly online.