That might be the case, but it was just another way of saying that causing false positives on HIV tests is a huge issue for a vaccine. It should absolutely be prevented if possible, or at the very least adresssed somehow.

If the vaccine proves effective, you could do a test before and then vaccinate on negative knowing you test positive afterwards for a while.

It's very different to a false positive to _another pathogen. That leaves you blind, indeed.

Well new tests have to be developed, that don't trigger when people are vaccinated but non ill.