If taking a pill to protect your own life every day is too much hard work we are doomed. But we aren’t, as PReP both protects people from infecting others as well as getting infected themselves.
So no, an infection does not require one person to slip up. For an infection to occur requires both persons to slip up.
Getting PReP requires regular HIV tests so it is in fact obvious that you are infected, if you get infected.
Of course this indeed only solves the issue in the developed world that can pay for (and wants to use) this medication but there really is no way around that. People that don’t want or can’t pay for this medication won’t want and be able to pay for a vaccine either.
So no, an infection does not require one person to slip up. For an infection to occur requires both persons to slip up.
Getting PReP requires regular HIV tests so it is in fact obvious that you are infected, if you get infected.
Of course this indeed only solves the issue in the developed world that can pay for (and wants to use) this medication but there really is no way around that. People that don’t want or can’t pay for this medication won’t want and be able to pay for a vaccine either.