Hi Concerned03, It is possible for HIV transmission to occur through open sores and cuts but it is considered an extremely low risk especially with this type of exposure. If your sexual partner did in fact have a paper cut on his finger, firstly he would need to be HIV positive and the cut would most likely need to be bleeding consistently for any possible transmission to occur. HIV cannot live long outside of the body and dried blood is extremely unlikely to cause an exposure. Additionally, you would most likely need to have open cuts or sores on the lining of your vaginal walls for such a risk to occur as his blood would need to enter your bloodstream to be able to cause infection. Such a risk exposure would be extremely rare but it is great that you are conscious of your sexual health. I hope this helps, if you have any other questions please feel free to leave a comment below or email me directly at bsmith@biosure.co.uk. Thank you, Becky.