Damp is definitely the key... it is also a bit of a tale that towels represent even a modest risk.
Ahhh that makes sense -- I'd read studies indicating that the virus can live on damp towels. I guess "damp" was the key there.... which is a relief to me!
None, the virus cannot live on dry surfaces with exposure to oxygen. To be transmitted it must be rubbed into the skin firmly to have a chance of reaching a nerve ending.
(I don't mean for this to sound at all offensive or like I am questioning your expertise!!!!) So there is no risk at all even though it was bare genitalia (ew, even I am grossed out by this!) touching a surface? :/
Herpes does not live on surfaces for very long if at all. Absolutely no chance of herpes infection here