Sir i just want to be sure if you understand me , I meant if the hands of masseuse contaminated by HBV or HCV before another customer before me , She didn't wash her hands after did masturbating on my penis, my mind says if she did that with another customer . 

Welcome back, but I'm sorry you found it necessary. 

"Although your masseuse did not wash her hands none of these infections are transmitted...by receiving masturbation from someone with genital secretions on their hands."

That includes secretions from prior clients as well as the sex worker's own genital fluids. Not enough infectious material can be carried over or survive to allow transmission in this manner. And the statistical chance that either she or a recent customer had HBV or HCV is very low anyway.---

Thank you dr Handsfield for quick responseby  , i know I can’t choose who doctors response my questions but I said that because my last question was with Dr Hook , anyway you or dr Hook you are wonderful doctors thank you so much for make me happy 

Thanks for the kind words. I'm glad to have helped.---