The steps you need to take to protect yourself and your partner depend on several things. These include whether you’re treating your HIV with medication. It also matters if you or your partner have recently had unprotected sex with someone who may have HIV.
Learn how you can have safe sex. That means protecting yourself and your partners.
Antiretroviral therapy, or ART, is medication that stops HIV from damaging your immune system. The medications lower the amount of HIV in your body. It can take up to 6 months for ART to start working.
Sometimes, ART works so well that the tests can’t find HIV in your blood. Doctors call this an undetectable viral load. That means you can’t infect anyone with HIV through sex. It may take 6 months for ART to lower your viral load enough to make unprotected sex safe.
Even if you’re HIV-positive, you can still get infected with a different strain of the virus. So protect yourself if you’re not sure of your partner’s status.
If you’re on ART, you will need a blood test every 3-4 months to monitor your viral load. Some people may never reach undetectable viral levels.
Condoms worn by both women and men greatly lower the chances that you’ll pass on or catch HIV.
The amount of protection depends on how you and your partner are having sex. Anal sex has the highest risk of passing on HIV. For example, you have a 1 in 72 chance of an HIV infection each time you are the person receiving anal sex. Wearing a male condom cuts that risk by 72%, or 1 in 259.
Next riskiest is if you’re the person on top during anal sex. You have a 1 in 909 chance of getting HIV from your partner without a condom.
If you’re female, you have slightly lower chance, or 1 in 1,234, of getting an infection during unprotected vaginal sex with an HIV-positive partner. Using a condom lowers that risk by an average of 80%.
Get PrEP and PEP
Pre-exposure prophylaxis (PrEP) is a preventive drug that stops HIV from taking hold or spreading in your body. You take this treatment when you don’t have HIV but may be at a high risk of getting infected by your partner.
If you take PrEP as instructed every day, your risk for getting HIV will fall by 99%. But it takes at least 7 days for PrEP to start working.
Post-exposure prophylaxis, or PEP, is an emergency form of ART. You take it if you’ve recently had sex that might have exposed you to HIV. You must take PEP as soon as possible, and no later than within 72 hours of having sex. Otherwise, the drugs won’t help.