Condoms are a great way to prevent HIV if used correctly. They also protect against other sexually transmitted infections. Should the condom break there’s Post Exposure Prophylaxis (PEP) a four week course of emergency protection pills that need to be started within 72hrs
Pre Exposure Prophylaxis (PrEP) is another extremely effective way to protect against HIV. This involves taking a medicine that has to be started before sex. which are used to treat HIV before and after sex. More information on this can be found here.
People with HIV on effective treatment cannot pass HIV to other people. This is because the HIV drugs reduce the level of the virus in their body to undetectable levels. People sometimes refer to this as U=U (undetectable = untransmittable)
You are most likely to catch HIV from someone who doesn’t know that they have it, so don’t make assumptions about sexual partners you don’t know well.