There is no test to see whether the wart virus has been eliminated. It is not possible to say for sure. However, if the warts have been eradicated as far as you can see, there isn't anything else to do. My advice is to tell any prospective partner that you used to have warts but that they were treated and aren't there anymore. That's true of tens of millions of other people in this country. It's a good idea in general to use condoms, at least until you're sure you're going to be in a long term relationship, but there's no clear evidence that condoms prevent spread of the wart virus. Basically, you do what you can do, and then move on. There's no other choice.
Take care.
Dr. Rockoff