Wild guess...20 years. I have read about many things that are promising but nothing that is even close right now.
Blood transmission...only happens during a blood transfusion where you are injecting new blood directly into your veins. The blood is moist and kept in a vaccume.
any other guesses or info regarding a vaccine or cure???
Guess? Don't believe in anything unless an HIV cure really has been discovered and medically proven by a recognised health body.
that is the reason i used the word 'guess' :)