Can You Catch Chlamydia With a Condom?

If you’re using a condom during sex, you might think there is no chance that you could catch an STD like chlamydia, but this is a complete myth! In fact, condoms are never 100% effective, so you may still be at risk. In this article, our Medical Director explores how effective condoms are, plus, additional ways you can protect yourself against getting chlamydia.

So, first things first, can you catch chlamydia when using a condom?

Yes, you can catch chlamydia, even when using a barrier method of protection. Condoms are only 50-90% effective against chlamydia transmission. This is largely down to using the condom incorrectly, which can increase the risk of STD spreading.

Read on to learn more about using a condom correctly to maximise its effectiveness, other ways you can reduce the chance of STD transmission with a condom, and how to get tested for chlamydia.

Can Chlamydia Spread Even When Using a Condom?

Condoms are an effective way to protect yourself from most STDs, including chlamydia. They provide a barrier against bacteria, greatly reducing the chance of bodily fluid exchange. 

That being said, the National Library of Medicine suggests that condoms may only be 50-90% effective against the transmission of chlamydia. 

This means that, unlike with kissing, there may still be a chance of catching the STD, even when a female or male condom is used. This reduction in effectiveness largely comes down to incorrect condom use, which we explain in more detail below.

What Other STDs Can Spread When Using a Condom?

It may sound surprising, but most STDs can spread even when using a barrier method of protection, like a condom. In the table below, we explore some of the most common STDs in the UK and US, and condom’s effectiveness against transmission of them:

Data taken from Indian J Sex Transm Dis AIDS. 2015 Jul-Dec;36(2):133–139. doi: 10.4103/2589-0557.167135

How Can You Reduce the Risk Of Transmission, Even When Using Condoms?

Whilst condoms can be a great way to reduce your chances of catching or spreading an STD, there are further steps you can take to protect your sexual health. Find out more below:

Don’t Have Sex With Someone Who’s Tested Positive

It may sound obvious, but if your sexual partner has recently tested positive for an STD like chlamydia, it is important that you abstain from any form of sexual content (even with a condom!) until they have fully completed their treatment and received confirmation that the infection has cleared.

Even if symptoms disappear before the treatment is finished, the infection may still be present and transmissible. Engaging in any sexual activity too soon increases the risk of reinfection, which can prolong the infection and make it harder to treat. Before you engage in sexual activities again, make sure your partner has a confirmed negative test result, and get tested yourself, even if you have no symptoms.

Use Condoms Correctly

Whilst condoms are one of the most effective ways to protect yourself against different STDs, they aren’t always used correctly, reducing their effectiveness. Common mistakes when using condoms include:

• Using out-of-date condoms
• Reusing condoms for different sexual acts
• Applying the condom before penetrative sex, but still having unprotected oral or anal sex (you can still get chlamydia from oral sex)
• Not leaving space at the tip, which can cause the condom to break
• Not rolling the condom down fully, leaving parts of the penis exposed
• Removing the condom incorrectly, leading to potential exposure to fluids
• Not checking for damage before use, as small tears or expired condoms can reduce protection
• Using oil-based lubricants with latex condoms, which can weaken the material and cause breakage
• Not being consistent with condom usage

To reduce the risk of chlamydia and other STDs, it’s essential to use condoms correctly every time. Always check the expiration date, follow the instructions, and use a new condom for each sexual act.

Get Tested Regularly

Getting an STD test on a regular basis is one of the best things you can do for your health, but it’s not as simple as taking one every 6 months and calling it a day. You actually need to do it much more often in order to have complete peace of mind. Here’s when you should be taking a full STD test:

• Before sleeping with someone new
• After every new sexual partner (after waiting the recommended incubation time, usually 2 weeks)
• If you experience any symptoms (such as unusual discharge, pain, or irritation)
• If your partner has been diagnosed with an STD
• Every 6-12 months if you’re sexually active, even if you don’t have any symptoms
• If you’re planning to get pregnant, or if you are currently pregnant

Consider Additional Protection Methods

Whilst condoms significantly reduce the risk of STDs, as does checking you’re free from STDs with regular testing, combining these with other preventative measures can offer you even more protection. 

• Using dental dams for oral sex to reduce the risk of transmission, as it’s possible to get chlamydia in your mouth.
• Opting for internal (female) condoms, which can provide better coverage and protection. However, don’t double up on condoms as this can cause friction, leading to breakage.
• Getting vaccinated against STDs like HPV (Human Papilloma Virus), hepatitis A, and hepatitis B.
• Taking PrEP (Pre-Exposure Prophylaxis) if you’re at high risk for HIV.

Get Tested For Chlamydia With Your Sexual Health

The great news is that chlamydia is curable if you know you have it. If you think you may have chlamydia, it’s important that you take a test two weeks after exposure. At Your Sexual Health, we offer a variety of testing options at our private sexual health clinics across the UK, or via a home testing kit.

Not sure what you need? Get in touch with our friendly team who’ll be able to advise on the best test to take. Or, if you’ve recently tested positive for chlamydia, read this helpful guide: What To Do if You Have Chlamydia