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When deciding whether to have sex without a condom, you’ll want to consider your sexual health. Having sex without a condom can put you at risk for getting a sexually transmitted infection (STI) if your partner has one. You can also pass on an STI to your partner if you have one. Getting tested with your partner can be an empowering way to care for your health and the health of your partner.

If you are having sex without a condom that could result in pregnancy, you’ll want to consider pregnancy prevention. Our pages on sexual health have more information about STIs and contraception.

You may have heard about something called HIV reinfection or superinfection. Even though you are both living with HIV, you and your partner may have different strains or subtypes of HIV. There have been a few cases of a person living with HIV getting a different strain of HIV that is resistant to certain medications through sex.

HIV reinfection doesn’t happen frequently. When it does, the person getting another strain of HIV has usually been diagnosed with HIV within the last four years and isn’t taking HIV treatment. Reinfection does not cause serious health problems for most people living with HIV.

Also, once you and your partner have both had an undetectable viral load for six months, HIV is unable to be passed on through sex. If you both continue to take your HIV treatment and remain undetectable, you can have sex without a condom without any worries about passing your strain of HIV to your partner, or your partner passing their strain of HIV to you. 

If you or your partner’s viral load is not undetectable, condoms are an option if you are concerned about HIV reinfection.

Mariah Wilberg

Mariah Wilberg

Article author

Mariah is a nationally recognised, award-winning writer, motivational speaker, and public health professional from the United States. Motivated by her lived experience with HIV and incarceration, she is passionate about bridging the gap between systems and those they serve through accessible education, research, governance, and policy and decision-making. Mariah’s current role focuses on increasing awareness of Undetectable = Untransmittable (U=U) in the US.

Basic information

How is HIV transmitted?

Two men embracing.

How is HIV not transmitted?

A couple kissing.

Can mosquitoes transmit HIV?

A close-up of a mosquito sitting on a hand, with a green background.

Transmission facts

Transmission facts

Myths and facts

Myths and facts

Is HIV man-made?

An illustration of an HIV virus.

What does undetectable = untransmittable (U=U) mean?

Domizia Salusest | www.domiziasalusest.com

Undetectable = Untransmittable (U=U)

U=U leaflet front cover

What’s the difference between PrEP and PEP for HIV prevention?

I’m living with HIV. Can I have sex without a condom?

I’m starting a relationship with someone who has HIV. What do I need to know?

Transmission and the law

Transmission and the law

HIV transmission

Illustration of purple HIV viruses on a white background.

Impossible routes of HIV transmission

A couple kissing.

Undetectable viral load and HIV transmission

Mareike Günsche | www.aspect-us.com

Condoms

Image: sirtravelalot/Shutterstock.com

How to use condoms and lubricant

Image: kittiwat chaitoep/Shutterstock.com

Female condoms for anal sex

One man standing behind another, removing the jeans from the man in front.

Post-exposure prophylaxis (PEP)

A white pill bottle is tipped over with blue pills spilling out on to a wooden table., along with white pills.

PEP

PEP

Oral sex and HIV

Image: NDAB Creativity/Shutterstock.com

Estimated HIV risk per exposure

Image: Kateryna Kon/Shutterstock.com

HIV in the UK

Two older men talk to each other in a garden.

Harm reduction

Naloxone at a needle exchange in Birmingham, UK. Nigel Brunsdon/nigelbrunsdon.com

Do condoms work?

Image: kittiwat chaitoep/Shutterstock.com

Where did HIV come from?

Democratic Republic of the Congo. Image by Christina Bergey. Creative Commons licence.