Thank you both Chima7 and GuitarRox! Even with some small chap in my hand/finger, or on both me and that person, would the hard high fives/hand shaking increase any risk? Or those kind of small chap, even I could feel some pain when I press on it, won't reach the blood system so it won't treat as a risk? If high fives and hand shaking is a risky act, then no one will play basketball or football, Am I understanding right? Thanks again!
HIV is spread from unprotected vaginal or anal sex or sharing of IV drug needles. Touching hands, high fives and hand shaking will not transmit HIV. The virus is inactivated in air and is much harder to get than people seem to think. You did not have any risk at all.
That is NOT how HIV is spread. If it was that easy, it would be a lot more prevalent. As long as you do not have unprotected anal or vaginal sex and you do not share drug needles with anyone, you will never be infected with HIV in your lifetime.